Yes, you can add turbo capability to an Eclipse, but the easiest and most reliable path depends on the model you own. Factory-turbo DSM Eclipses from the 1990s are the simplest starting point; for non-turbo generations, a turbo setup is a major project that involves careful planning and significant upgrades.
Factory-turbo DSM Eclipse: the baseline
During the 1990s, Mitsubishi sold the Eclipse with factory turbo variants in the DSM family. These models included turbocharged versions that came with the 4G63T engine, intercooler, upgraded fuel and cooling systems, and often all-wheel drive. If you already own a GST or GSX (the turbo/ AWD trims) or can source a complete donor from a low-mileage example, upgrading or rebuilding there is typically the most straightforward way to go fast with the Eclipse.
- Obtain a factory-turbo DSM Eclipse (GST/GSX) as the donor car or baseline, using its engine, ECU, harness, intercooler, exhaust, and required hardware for a clean turbo setup.
- Be prepared for supportive upgrades common to turbo DSM builds, such as improved fuel delivery (injectors, pump, lines), an intercooler, upgraded cooling, and appropriate engine management (often a reflash or standalone ECU).
- Expect compatibility considerations with the transmission and drivetrain; many DSM Eclipses used AWD or robust manual transmissions that can handle increased power with proper maintenance.
Concluding note: Factory-turbo DSM Eclipses provide a proven, relatively straightforward path to a turbocharged drive if you can source the right donor parts and manage the supporting upgrades carefully.
Aftermarket routes and non-turbo generations
If you own a non-turbo Eclipse or want a more modern platform, there are other routes, but they require more planning and investment. Here are common options enthusiasts pursue.
- Aftermarket turbo kit for a non-turbo DSM/Eclipse (2G or 1G) build: This approach uses a complete turbo kit designed for the specific generation, combined with fuel system upgrades, ECU tuning, intercooler piping, and exhaust work.
- Engine swap to a turbo-ready platform: Some owners opt to swap in a turbo-equipped engine (often a 4G63T-based setup) or another compatible turbo engine. This can offer reliable power but demands custom engine mounts, wiring, exhaust, and calibration work.
- Performance-focused improvements without a full engine swap: In some cases, enthusiasts retrofit smaller, forced-induction hardware (smaller turbo, appropriate fuel and ignition tuning) on NA engines, but this tends to deliver modest gains and increases stress on the stock bottom end if not done carefully.
Concluding note: For non-turbo Generations, aftermarket kits and engine swaps are viable but are complex projects that typically require professional installation and precise tuning to maintain reliability and drivability.
Important planning considerations
Before launching a turbo project, consider the practical and legal implications, as well as the likely costs and maintenance demands. These factors often determine whether a turbo upgrade makes sense for your Eclipse.
- Budget and total cost of ownership: hardware, installation, tuning, potential upgrades to fuel system and cooling, and ongoing maintenance can add up quickly.
- Reliability and long-term maintenance: turbo setups demand more rigorous cooling, oiling, and component quality; failure of a turbo, intercooler, or fuel system can be expensive.
- Legal and emissions considerations: some regions have strict emissions tests or inspections; aftermarket tuning must comply with local regulations to avoid fines or registration issues.
- Insurance and resale: adding turbo hardware can affect insurance premiums and vehicle value; disclosure and documentation help avoid surprises.
Concluding note: Thorough planning, a realistic budget, and professional guidance are essential to a successful and legal turbo project for an Eclipse.
Summary
Turbocharging an Eclipse is feasible, but the path you choose matters. If you own a factory-turbo DSM Eclipse from the 1990s, it’s often the simplest route to go fast, with a clear blueprint for upgrades. For non-turbo generations, aftermarket kits or engine swaps are options but require substantial investment, precise tuning, and attention to emissions and warranty considerations. Regardless of path, a turbo build should be undertaken with careful planning and ideally professional support to balance performance, reliability, and legality.