WHY STEEL TUNED PIPES ?
They work the best, just examine any dirt bike or racing go-kart ever made. They will have a steel exhaust flange and expansion chamber and if using a silencer it will typically have an aluminum silencer body with a steel core. Aluminum chambers (tuned pipes) work OK on nitro engines where exhaust gas temperatures are quite low, but with the much higher EGT’s of gasoline engines the aluminum chambers do not resonate properly thus dramatically reducing there effectiveness. The many aluminum exhaust systems available from Marine Specialties and others are lightweight, look good and offer various header tube configurations for versatile and easy installation as well as being less expensive than the Marine Specialties nickel plated steel exhaust system and the steel systems manufactured by others. On the dyno, the worst steel tuned pipe will produce much more power than the best performing aluminum pipe. All this being said, there is no “best” exhaust system, just like there is no “best” e
