HP difference quiet / loud exaust?
Hey guys, not sure if this is the right place to put this but ill ask anyway.
Is there a major horsepower difference between the performance exhausts
Evo2 vs Sp2?
or any of the smaller tip exhausts vs per say the evo2/apexN1 ?
Is there a major horsepower difference between the performance exhausts
Evo2 vs Sp2?
or any of the smaller tip exhausts vs per say the evo2/apexN1 ?


