THE 4G63 LEGACY
The 4G63 turbocharged inline-four is automotive royalty. Mitsubishi developed this 2.0-liter engine in the 1980s, and it became the foundation for one of the most successful rally programs in WRC history. The Evolution III represented the third iteration of Mitsubishi's rally-bred road car, and the 4G63T was refined to produce 280 horsepower—the Japanese gentleman's agreement limit that everyone knew was conservative.
What made the 4G63 legendary wasn't just power output—it was tuning potential. The cast-iron block could handle massive boost pressure. The forged internals could survive abuse that would destroy lesser engines. Enthusiasts routinely extracted 400, 500, even 600 horsepower from modified 4G63 engines using larger turbochargers, upgraded fuel systems, and electronic management. The aftermarket support was extensive because the engine was fundamentally overbuilt.
The Evolution III's 4G63T used a TD05 16G turbocharger, MIVEC variable valve timing, and an intercooler mounted prominently in the front bumper. Boost came on hard around 3,500 RPM and pulled relentlessly to redline. The engine note was aggressive—turbo whoosh, wastegate flutter, and exhaust bark combined into a mechanical symphony that announced the Evo's intentions. This wasn't refinement. This was engineering for maximum performance.