Here's why:
* Different Engine Configurations: The Subaru WRX uses a horizontally opposed (boxer) engine, while the Mitsubishi Eclipse 420A has a traditional inline four-cylinder engine. These engines have different bolt patterns, exhaust manifold configurations, and overall dimensions.
* Turbocharger Design: The WRX turbocharger is specifically designed for the WRX engine's unique characteristics, including the boxer engine configuration and its specific exhaust manifold.
* Mounting and Piping: The WRX turbocharger's mounting points and exhaust piping are designed to work with the WRX's specific engine bay layout.
Attempting to force the WRX turbo onto a 420A engine would require extensive modifications:
* Custom Exhaust Manifold: You would need a custom-made exhaust manifold to connect the turbo to the 420A engine.
* Custom Turbo Mounting: You would need to fabricate mounting brackets and possibly modify the engine bay to accommodate the WRX turbocharger.
* Custom Piping and Intercooler: You would need to design and fabricate a custom intake and intercooler system to connect the turbocharger to the engine and the intake manifold.
It's highly recommended to choose a turbocharger specifically designed for the 420A engine. There are many options available that will provide a more reliable and easier installation.
