The Mitsubishi Eclipse has captured our hearts as one of the most iconic tuner cars ever built. From the original DSM models of the 1990s to the later generations, this sports coupe offers an incredible platform for performance modifications that’ll transform your ride into a street-legal beast.
We’ve seen countless Eclipse builds that prove this car’s potential goes far beyond its factory specifications. Whether you’re dreaming of turbocharger upgrades, suspension tweaks, or complete engine swaps, the Eclipse community has developed proven methods to extract serious horsepower and handling prowess from these machines.
Ready to unlock your Eclipse’s true potential? We’ll walk you through the essential modifications, common pitfalls to avoid, and insider tips that separate successful builds from expensive mistakes. From budget-friendly bolt-ons to comprehensive overhauls, you’ll discover exactly what it takes to create the Eclipse of your dreams while maintaining reliability and drivability.
Popular Mitsubishi Eclipse Models for Tuning
Eclipse tuning enthusiasts consistently gravitate toward exact generations that offer the best modification potential and aftermarket support. Each generation presents unique advantages for different tuning approaches and budget ranges.
First Generation DSM Eclipse (1990-1994)
First generation DSM Eclipse models represent the holy grail of Mitsubishi tuning platforms. These models feature the legendary 4G63 turbocharged engine in GST and GSX variants, delivering 195 horsepower from the factory with massive upgrade potential.
Key tuning advantages include:
- 4G63T engine responds exceptionally well to boost increases
- Extensive aftermarket support from companies like AMS Performance and Buschur Racing
- All wheel drive system in GSX models provides superior traction for high horsepower builds
- Lightweight construction enhances power-to-weight ratios
DSM Eclipse tuning commonly achieves 300-400 horsepower with basic modifications like larger turbochargers, fuel system upgrades, and ECU tuning. Advanced builds frequently exceed 600 horsepower using built engine internals and larger turbo setups.
Common modification paths focus on turbo upgrades (16G, 20G, or GT35R options), fuel system enhancements, and transmission strengthening to handle increased torque output.
Second Generation Eclipse (1995-1999)
Second generation Eclipse models continue the DSM legacy with refined styling and improved chassis dynamics. GST and GSX variants maintain the potent 4G63T powerplant while addressing some reliability concerns from earlier models.
Notable improvements for tuning:
- Enhanced chassis rigidity improves handling characteristics
- Updated ECU systems offer better tuning flexibility
- Improved cooling systems handle modified power levels more effectively
- Stronger transmission components reduce failure rates
These models achieve similar power gains to first generation cars but with improved daily drivability. Popular modifications include front-mount intercoolers, exhaust system upgrades, and suspension enhancements using brands like Tein and Eibach.
Second generation Eclipse tuning often emphasizes balanced performance builds that maintain reliability while delivering important power increases over stock configurations.
Third and Fourth Generation Options (2000-2012)
Third and fourth generation Eclipse models present different tuning opportunities compared to their DSM predecessors. These generations feature naturally aspirated V6 engines (3.0L in third gen, 3.8L in fourth gen) that require alternative modification approaches.
Tuning characteristics include:
- V6 engines respond well to forced induction conversions
- Lighter weight compared to earlier AWD models improves agility
- Modern chassis design benefits from suspension modifications
- Engine swap potential accommodates various powerplant options
| Generation | Engine Options | Horsepower Range | Popular Mods |
|---|---|---|---|
| 3rd Gen (2000-2005) | 3.0L V6 | 200-210 HP | Turbo kits, intake/exhaust |
| 4th Gen (2006-2012) | 3.8L V6 | 263 HP | Supercharger kits, suspension |
Later generation Eclipse tuning often involves turbocharger or supercharger installations to match DSM performance levels. Companies like Greddy and Vortech offer forced induction systems specifically designed for these platforms.
Engine swap projects frequently replace stock V6 engines with turbocharged 4G63T units from DSM models, combining modern chassis dynamics with proven DSM powertrains for optimal tuning results.
Essential Engine Modifications for Eclipse Tuning
Engine modifications form the foundation of any successful Mitsubishi Eclipse tuning project. These upgrades unlock the true potential hidden within the Eclipse platform and transform your vehicle into a high-performance machine.
Turbocharger Upgrades and Installation
Turbocharger upgrades deliver the most dramatic power gains for DSM Eclipse models equipped with the 4G63 engine. Stock turbos typically produce 195-210 horsepower but upgrading to larger units can push output to 350-500 horsepower.
Popular turbo options include:
- Garrett GT2860RS: Produces 300-350 horsepower with excellent spool characteristics
- Precision 5858: Generates 400-450 horsepower for serious performance builds
- Holset HX35: Offers budget-friendly power increases up to 375 horsepower
Installation requires supporting modifications to handle increased boost pressure. Fuel injectors must be upgraded to at least 550cc units while fuel pumps require flow rates of 255 liters per hour minimum. Intercoolers become critical components as turbo upgrades generate significantly more heat than stock units.
Piping modifications often become necessary to accommodate larger turbochargers. Custom downpipes improve exhaust flow while upgraded wastegates provide better boost control. Professional installation costs range from $2,000-$4,000 depending on turbo selection and supporting modifications.
ECU Tuning and Engine Management
ECU tuning maximizes the benefits of physical modifications while ensuring safe operation under increased performance demands. Modern engine management systems allow precise control over fuel delivery ignition timing and boost pressure.
Standalone ECU options provide comprehensive tuning capabilities:
- AEM Infinity: Features advanced knock control and flex fuel compatibility
- Haltech Elite: Offers extensive sensor inputs and advanced mapping functions
- MegaSquirt: Provides cost-effective tuning for budget-conscious builds
Professional tuning typically costs $800-$1,500 but delivers properly calibrated maps that protect your investment. Dyno tuning sessions reveal power gains while ensuring air-fuel ratios remain within safe parameters. Custom maps optimize performance across the entire RPM range rather than just peak horsepower numbers.
Flash tuning presents a more affordable alternative for mild modifications. Companies like Road Race Engineering and Modern Performance offer pre-programmed ECU files for common modification combinations. These tunes typically cost $300-$600 and provide solid gains for basic upgrades.
Data logging capabilities allow continuous monitoring of critical engine parameters. Wideband oxygen sensors provide real-time air-fuel ratio feedback while knock sensors detect harmful detonation events before engine damage occurs.
Intake and Exhaust System Modifications
Intake and exhaust modifications improve airflow efficiency throughout the entire breathing system. These upgrades work synergistically with turbo and ECU modifications to maximize power output.
Cold air intake systems replace restrictive factory airboxes:
- AEM Cold Air Intake: Increases airflow by 15-20% over stock systems
- K&N Performance Kit: Features washable filters for long-term cost savings
- Injen SP Series: Provides aggressive intake sound with measurable power gains
High-flow air filters allow greater airflow while maintaining filtration efficiency. Cone-style filters typically flow 25-30% more air than paper elements but require regular cleaning to maintain performance levels.
Exhaust system upgrades reduce backpressure and improve turbo spool characteristics. Cat-back exhaust systems like those from Borla or Tanabe provide moderate gains of 10-15 horsepower. Full turbo-back systems eliminate restrictive catalytic converters and deliver gains of 20-35 horsepower.
Downpipe upgrades offer the largest exhaust-related power increases:
- 3-inch downpipes reduce turbo backpressure significantly
- High-flow catalytic converters maintain emissions compliance
- Straight-pipe configurations maximize flow for race applications
Header upgrades benefit naturally aspirated Eclipse models more than turbocharged variants. Aftermarket headers like DC Sports or OBX Racing increase power by 8-12 horsepower on non-turbo engines while providing minimal gains on turbocharged applications.
Professional installation costs vary from $200-$800 depending on system complexity and local labor rates. Complete intake and exhaust packages typically produce combined gains of 25-40 horsepower when properly tuned.
Performance Suspension and Handling Upgrades
Performance suspension components transform the Eclipse from a comfortable cruiser into a precision handling machine. These modifications address the stock suspension’s limitations while dramatically improving cornering ability and overall driving dynamics.
Coilover Systems and Lowering Springs
Coilover systems provide the ultimate suspension upgrade for Eclipse tuning enthusiasts seeking maximum adjustability and performance. BC Racing BR Series coilovers offer 32-way damping adjustment with ride heights ranging from 1.5 to 3.5 inches lower than stock settings. Tein Flex Z coilovers deliver similar performance with simplified 16-way adjustment and include pillow ball top mounts for improved response.
Ground Control coilovers paired with Koni Yellow dampers create a budget-friendly option that maintains excellent performance characteristics. This combination costs approximately $800-1200 compared to $1500-2500 for complete coilover systems. Eibach Pro-Kit springs lower the Eclipse 1.2 inches front and 1.5 inches rear while maintaining reasonable ride quality for daily driving scenarios.
Installation requires spring compressors and proper alignment equipment to achieve optimal geometry settings. Coilover systems allow precise corner balancing and weight distribution adjustments that significantly improve lap times on track-focused builds. Spring rates between 8-12 kg/mm front and 6-10 kg/mm rear work effectively for most Eclipse applications.
Sway Bars and Chassis Reinforcement
Sway bar upgrades dramatically reduce body roll while improving steering response during aggressive cornering maneuvers. Whiteline adjustable sway bars increase stiffness by 200-300% over stock components with multiple adjustment settings for fine-tuning handling characteristics. Progress rear sway bars measure 22mm diameter compared to the factory 16mm unit and include polyurethane bushings for reduced deflection.
Chassis reinforcement components address the Eclipse’s inherent structural weaknesses that become apparent during high-performance driving situations. Strut tower braces connect the suspension mounting points to reduce flex and maintain consistent camber angles under load. DC Sports aluminum strut bars cost $150-250 and provide measurable improvements in steering precision.
Subframe connectors eliminate chassis flex between the front and rear suspension pickup points on older Eclipse models. These bolt-in components weigh 15-20 pounds but increase structural rigidity by approximately 40% based on independent testing data. Lower tie bars connect the front subframe to reduce movement during hard acceleration and braking events.
Roll cage installation represents the ultimate chassis reinforcement for track-dedicated Eclipse builds. DOM tubing cages meeting SCCA specifications weigh 80-120 pounds while providing maximum protection and structural integrity for competitive racing applications.
Transmission and Drivetrain Enhancements
Transmission and drivetrain enhancements maximize power delivery efficiency while handling increased output from modified Eclipse engines. These upgrades ensure reliable power transfer from engine to wheels during high-performance driving conditions.
Manual Transmission Upgrades
Manual transmission upgrades protect the drivetrain components from the stress of increased horsepower and torque output. The stock Mitsubishi F5M33 transmission in DSM Eclipse models handles approximately 350 wheel horsepower before requiring reinforcement or replacement.
Clutch System Upgrades
Clutch upgrades represent the first modification when power levels exceed 250 wheel horsepower. Competition Clutch Stage 2 clutches handle 400-450 wheel horsepower while maintaining daily drivability. ACT Heavy Duty pressure plates increase clamping force by 35% over stock specifications and accommodate turbo lag characteristics effectively.
Transmission Internals
Internal transmission modifications become necessary at power levels exceeding 400 wheel horsepower. Shepherd Racing carbon synchros eliminate grinding during aggressive shifts and extend transmission life by 60%. Hardened output shafts from companies like DSMLink prevent breakage during drag racing applications where torque multiplication occurs.
Short Throw Shifters
Short throw shifters reduce shift travel by 40% and improve gear engagement precision. Kartboy short shifters feature bronze bushings that eliminate play commonly found in worn stock units. C’s short shifter kits include weighted shift knobs that provide better shift feel during spirited driving sessions.
All-Wheel Drive System Modifications
All-wheel drive system modifications optimize traction distribution and component durability in turbocharged DSM Eclipse models. These enhancements prevent drivetrain failures that occur when stock components encounter increased power levels.
Transfer Case Upgrades
Transfer case modifications address the weak points in the AWD system that limit power handling capacity. Aftermarket transfer case gears from Shep Trans increase strength by 25% over stock components. Viscous coupling replacements like the Torsen differential provide more predictable power distribution characteristics during cornering maneuvers.
Rear Differential Enhancements
Rear differential upgrades improve traction and eliminate wheel spin during acceleration phases. Limited slip differentials from Cusco provide 1.5-way operation that enhances corner exit traction. Phantom Grip units offer a budget alternative that increases rear grip by 30% over open differential configurations.
Driveshaft and Axle Reinforcement
Driveshaft modifications prevent component failure at elevated power levels exceeding 350 wheel horsepower. DSS one-piece driveshafts eliminate the problematic center support bearing that fails in stock configurations. Heavy-duty CV joints from GKN handle increased torque loads while maintaining smooth operation during daily driving conditions.
Popular Tuning Brands and Parts Suppliers
Eclipse tuning success depends heavily on sourcing quality components from reputable manufacturers who understand the platform’s unique characteristics. We’ve compiled the most trusted brands that consistently deliver performance gains while maintaining reliability across all Eclipse generations.
Top Aftermarket Manufacturers
AEM Electronics leads the ECU tuning market with their Series 2 Engine Management System specifically calibrated for 4G63 engines. Their cold air intake systems deliver measurable power gains of 8-12 horsepower on naturally aspirated models while their wideband UEGO controllers ensure precise air-fuel ratio monitoring during tuning sessions.
Garrett Motion dominates the turbocharger upgrade segment with their GT2860RS and GT2871R units becoming industry standards for DSM Eclipse builds. These turbochargers support power levels from 350-450 horsepower while maintaining excellent spool characteristics and reliability under track conditions.
BC Racing manufactures coilover systems specifically engineered for Eclipse chassis dynamics across all generations. Their BR Series coilovers feature 32-way dampening adjustment and independent height adjustment allowing precise suspension tuning for street and track applications.
ACL Race Series produces performance engine bearings designed to handle the increased loads from high-horsepower 4G63 builds. Their tri-metal construction withstands power levels exceeding 500 horsepower while maintaining proper oil clearances under extreme operating conditions.
Whiteline Performance offers comprehensive suspension bushings and anti-roll bar kits that eliminate the factory rubber components’ compliance issues. Their adjustable rear sway bars reduce understeer tendencies while their front strut tower braces improve chassis rigidity by 15-20% during cornering loads.
HKS Power develops exhaust systems and intercoolers optimized for Eclipse turbo applications. Their GT-RS intercooler kit reduces intake air temperatures by 40-50 degrees Fahrenheit compared to stock units while their Hi-Power exhaust systems add 12-18 horsepower through improved flow characteristics.
Budget vs Premium Component Options
Entry-level Eclipse builds benefit from proven budget manufacturers who deliver solid performance gains without premium pricing. DC Sports aluminum strut tower braces cost 60% less than comparable Cusco units while providing similar chassis reinforcement benefits for street-driven vehicles.
Greddy intake systems offer excellent value proposition with their aluminum piping and high-flow filter elements generating 6-8 horsepower gains at half the cost of AEM’s premium cold air intake kits. Their basic boost controllers also provide reliable overboost protection for mild turbo upgrades without expensive electronic features.
Megan Racing coilover systems deliver height adjustability and improved handling characteristics at $800-1200 price points compared to $1800-2500 for premium BC Racing or KW Variant setups. These budget options work well for daily driven Eclipse builds requiring moderate lowering and improved damping control.
Mid-range component selection balances performance capabilities with long-term reliability considerations. Tomei forged pistons and connecting rods handle 400-450 horsepower applications while costing 30% less than comparable JE Pistons or Manley Performance components without sacrificing durability under normal driving conditions.
Premium manufacturers command higher prices through advanced engineering and proven track records. Motec engine management systems cost $3500-5500 but provide unmatched tuning flexibility and data logging capabilities essential for professional race teams and serious enthusiasts pushing power levels beyond 600 horsepower.
Ohlins suspension components represent the pinnacle of damping technology with their TTX coilovers featuring advanced valve designs and remote reservoir systems. These $4000-6000 setups deliver track-level performance but require professional setup and periodic maintenance to achieve their full potential.
Component selection eventually depends on intended use and performance goals rather than brand prestige alone. Daily driven Eclipse builds achieve excellent results with mid-range manufacturers while track-focused vehicles benefit from premium components’ advanced features and superior durability under extreme conditions.
Cost Analysis of Eclipse Tuning Projects
Budget planning separates successful Eclipse builds from abandoned garage projects. We’ve analyzed current market prices and typical modification pathways to provide realistic cost expectations for your tuning journey.
Entry-Level Modification Budgets
Entry-level Eclipse tuning delivers impressive performance gains without very costly. Basic turbocharger upgrades for DSM models start around $1,500-2,500 for a complete kit including a TD05-16G turbocharger, necessary gaskets, and basic supporting modifications.
Supporting modifications add another $800-1,200 to your budget. Essential components include upgraded fuel injectors ($200-400), a front-mount intercooler ($300-500), and basic ECU tuning ($300-500). These modifications typically increase power output from stock 195-210 horsepower to 280-320 horsepower.
Suspension upgrades represent excellent value for entry-level builds. Quality coilover systems like Ground Control paired with Koni Yellow dampers cost $600-900 and dramatically improve handling characteristics. Budget-friendly sway bar upgrades from manufacturers like Whiteline add another $200-400 to your suspension budget.
| Modification Category | Cost Range | Power Gain | Performance Impact |
|---|---|---|---|
| Basic Turbo Upgrade | $1,500-2,500 | 80-110 HP | High |
| Supporting Mods | $800-1,200 | 10-20 HP | Medium |
| Entry Suspension | $600-900 | 0 HP | High |
| Basic Exhaust | $400-700 | 5-15 HP | Low |
Exhaust system modifications complete most entry-level builds. Cat-back exhaust systems cost $400-700 and provide modest power gains while dramatically improving sound quality. Downpipe upgrades add another $300-500 but unlock important performance potential when combined with ECU tuning.
High-Performance Build Costs
High-performance Eclipse builds demand substantial financial commitment but deliver track-ready capabilities. Professional engine builds targeting 400-500 wheel horsepower start at $8,000-12,000 including machining, forged internals, and assembly labor.
Turbocharger systems for high-performance applications cost $3,000-5,000. Garrett GT2860RS or Precision 6266 turbochargers represent popular choices in this power range. Supporting modifications include larger fuel injectors ($400-800), high-flow fuel pumps ($300-600), and professional standalone ECU systems ($1,500-3,000).
Transmission upgrades become critical at elevated power levels. Strengthened manual transmissions with upgraded gear sets cost $2,500-4,000. Heavy-duty clutch systems capable of handling 400+ wheel horsepower add another $800-1,500 to your drivetrain budget.
Premium suspension systems for track use range from $2,000-4,000. BC Racing ER Series or Öhlins Road & Track coilovers provide maximum adjustability and performance. Chassis reinforcement components including roll cages add $1,500-3,000 depending on complexity and fabrication requirements.
| Build Level | Engine Mods | Drivetrain | Suspension | Total Cost |
|---|---|---|---|---|
| Street (300 HP) | $3,000-5,000 | $1,500-2,500 | $1,200-2,000 | $5,700-9,500 |
| Track (400 HP) | $8,000-12,000 | $3,500-6,000 | $3,000-5,000 | $14,500-23,000 |
| Race (500+ HP) | $12,000-18,000 | $5,000-8,000 | $4,000-7,000 | $21,000-33,000 |
Professional tuning and dyno time add $500-1,200 to high-performance builds. Custom fabrication work for unique applications increases costs significantly. Fuel system upgrades including larger fuel rails and pumps contribute another $800-1,500 to your budget.
Labor costs vary dramatically by region and shop reputation. Professional installation adds 30-50% to parts costs for complex modifications. Many enthusiasts reduce expenses by performing basic installations themselves while outsourcing machine work and tuning to specialists.
Common Challenges and Maintenance Considerations
Mitsubishi Eclipse tuning presents exact challenges that distinguish it from other platforms, particularly with sourcing quality parts and maintaining reliability during high performance modifications. DSM models face notorious issues with crankwalk development in 4G63 engines, typically occurring between 80,000-120,000 miles when thrust bearings wear prematurely. This phenomenon affects approximately 15-20% of turbocharged DSMs according to documented cases from Eclipse forums and service records.
Parts Availability and Quality Control
Finding authentic OEM replacement parts becomes increasingly difficult as these vehicles age, with Mitsubishi discontinuing many Eclipse exact components after 2012. Aftermarket alternatives vary significantly in quality, requiring careful research before purchasing critical engine internals or suspension components. Chinese manufactured turbochargers often fail within 10,000-15,000 miles, while reputable brands like Garrett or Precision Turbo typically last 50,000-80,000 miles under similar conditions.
Critical components requiring OEM or premium aftermarket sources:
- Engine gaskets and seals
- Timing belt tensioners and idler pulleys
- Fuel system components
- Electrical connectors and wiring harnesses
Maintenance Intervals for Modified Eclipses
Turbocharged DSM models require more frequent maintenance than naturally aspirated variants, especially when running elevated boost levels above stock 12-14 psi. Oil changes must occur every 3,000 miles using high quality synthetic oil, as turbocharger bearing lubrication becomes critical at sustained high temperatures. Spark plugs require replacement every 10,000-15,000 miles in modified engines, compared to 30,000 miles in stock applications.
Air filters need inspection every 5,000 miles in dusty environments, while intercooler efficiency drops significantly when core fins become clogged with debris. Fuel filters demand replacement every 20,000 miles to prevent injector damage from contamination, particularly important when running larger injectors that operate at higher pressures.
Electrical System Complications
Eclipse electrical systems present unique challenges during modification projects, with aging wiring harnesses developing resistance issues that affect engine management systems. Ground connections corrode over time, causing erratic idle conditions and intermittent check engine lights that plague many modified DSMs. Professional diagnosis requires specialized scan tools compatible with Mitsubishi ECU protocols, as generic OBD readers often miss manufacturer exact codes.
Common electrical failures include:
- Mass airflow sensor degradation after 60,000 miles
- Ignition coil pack failures in high boost applications
- Alternator inadequacy when running multiple accessories
- Fuel pump voltage drop through worn relay contacts
Cooling System Demands
Modified Eclipse engines generate substantially more heat than stock configurations, requiring upgraded cooling components to prevent overheating during spirited driving sessions. Stock radiators prove insufficient for engines producing over 300 horsepower, with coolant temperatures exceeding 220°F during track events or aggressive street driving. Aluminum radiators with increased core thickness provide 25-30% better heat dissipation compared to original equipment.
Thermostat replacement becomes necessary when installing larger turbochargers, as stock units open at 180°F while performance applications benefit from 160°F units that maintain lower operating temperatures. Water pump impellers wear faster in high performance applications, typically requiring replacement every 40,000-50,000 miles instead of the standard 60,000 mile intervals.
Transmission Longevity Factors
Manual transmissions in modified Eclipses experience accelerated wear when subjected to increased torque loads, particularly in drag racing applications where launch abuse occurs frequently. Second gear synchros fail most commonly, typically between 80,000-100,000 miles in vehicles producing over 350 wheel horsepower. Transmission fluid changes every 15,000 miles using synthetic gear oil help extend component life in high stress applications.
Clutch system maintenance requires attention to hydraulic components, as clutch master and slave cylinders develop internal leaks that affect engagement quality. Clutch disc life varies dramatically based on driving style, with aggressive launches reducing lifespan to 15,000-20,000 miles while conservative driving extends service intervals to 40,000-50,000 miles.
Conclusion
We’ve explored every aspect of Mitsubishi Eclipse tuning from engine modifications to suspension upgrades and budget planning. The Eclipse remains one of the most rewarding platforms for enthusiasts seeking affordable performance potential.
Success in Eclipse tuning comes down to proper planning realistic budgeting and understanding the unique characteristics of your exact generation. Whether you’re building a weekend warrior or a track-focused monster the Eclipse platform offers endless possibilities.
Remember that quality components and professional tuning make the difference between a reliable build and constant headaches. We encourage you to start with proven modifications and gradually work toward your performance goals while maintaining the car’s drivability and longevity.
Frequently Asked Questions
What makes the Mitsubishi Eclipse a good tuner car?
The Mitsubishi Eclipse, particularly the DSM models (1990-1999), features the legendary 4G63 turbocharged engine with extensive aftermarket support. These cars can easily achieve 300-400 horsepower with basic modifications. The platform offers excellent upgrade potential, balanced chassis dynamics, and a rich tuning community that makes parts and knowledge readily available for enthusiasts.
Which generation of Eclipse is best for tuning?
The first and second generation DSM Eclipse models (1990-1999) are considered the best for tuning due to their turbocharged 4G63 engines. These generations offer the most aftermarket support and easiest path to significant power gains. Later generations (2000-2012) require more extensive modifications like engine swaps or forced induction conversions to achieve similar performance levels.
How much horsepower can a stock Eclipse handle?
Stock DSM Eclipse models with the 4G63 engine can safely handle around 250-300 wheel horsepower with proper supporting modifications. Beyond this level, internal engine components like pistons, rods, and head gaskets typically need upgrading. The transmission and clutch also require attention when exceeding 250 wheel horsepower to ensure reliable power transfer.
What are the essential first modifications for an Eclipse?
Essential first modifications include ECU tuning, upgraded fuel injectors, a high-flow fuel pump, and an improved intercooler. These supporting modifications ensure safe and reliable operation when adding power. A quality exhaust system and cold air intake also provide good performance gains while maintaining drivability for daily use.
How much does it cost to build a performance Eclipse?
Entry-level builds start around $3,000-4,000 for basic turbocharger upgrades and supporting modifications. Mid-level builds range from $6,000-10,000, while high-performance builds with professional engine work can cost $15,000-25,000 or more. Costs vary significantly based on whether you perform installations yourself or hire professionals for the work.
What are common problems with modified Eclipse models?
Common issues include crankwalk in DSM models, difficulty sourcing quality OEM parts due to age, and increased maintenance requirements for turbocharged engines. Modified Eclipses also face cooling system challenges, electrical complications from aftermarket components, and transmission longevity concerns at higher power levels. Regular maintenance becomes crucial for reliability.
Do I need professional tuning for Eclipse modifications?
Yes, professional ECU tuning is essential for maximizing performance and ensuring safe operation, especially with turbocharger upgrades. A proper tune optimizes air/fuel ratios, timing, and boost levels while preventing engine damage. Standalone engine management systems often require professional installation and tuning to achieve optimal results and reliability.
What suspension upgrades work best for Eclipse handling?
Coilover systems like BC Racing BR Series or Tein Flex Z offer the best adjustability and performance. Budget options include Ground Control coilovers with Koni Yellow dampers. Adding adjustable sway bars, strut bars, and subframe connectors significantly improves handling. These modifications transform the Eclipse from a comfort-oriented cruiser into a precision handling machine.
