Yeah, I mainly want better sound, but I'd take the ponies if they were available at or around the same price as just bolt ons. But, yer sayin' that nobody makes a slip-on kit fer the busa, that replaces the mid pipes and the cans and leaves the stock head pipe?
This definitely explains why bolt ons don't give more HP tho. They are downstream from a worse restriction...
Either way, until my warrranty is up I ain't gonna change the head pipes. I'm gonna get cans for now. When the warranty is up I will prolly get a full exhaust and do some other stuff, just for fun.