Originally Posted by chilibowl

I bet hardly any gains. The 37's exhaust is actually a full true dual exhaust. This new motor is as far as its gonna go. Its very highly tuned from the factory. The only way I see this motor improving ONE final notch, is either the addition of FI, or Direct Injection from the factory....I honestly think intakes and exhaust will do nothing but create sound for this car. A lightened flywheel would possibly free up some HP...