Fit For Celica GT-4 ST185 3S-GTE 2.0 1989-1993 Turbo/5S-FE 2.2L Manual Transmission Aluminum Radiator. This component reduces the emission of harmful pollutants like nitrogen oxides by maintaining lower combustion temperatures and promoting cleaner burning. It allows the turbocharger to operate at higher boost pressures safely, thereby unlocking greater potential power output from the engine. Lowering Intake Air Temperature: Cools the high-temperature air compressed by the turbocharger through air-to-air or air-to-water heat exchange, preventing damage to intake sensors. Increasing Air Density: The increased density of cooled air allows more oxygen to enter the cylinders, improving combustion efficiency., Manufacturer: DGOINGPI