Hello,
I was wondering what the difference would be for bpu....3" or 3.5" dp? Is there much of a difference? what do you guys prefer?
thanks,
Tony

94' TT 6-Speed
00' Jeep Cherokee Sport

I dunno what kind of difference it would make, both my supras have had a 3 inch DP. One from RMM the other from PHR. Both cars put down good BPU power. Maybe someone with some experience can actual tell us if theres any difference on a stock twinned car.

John

1995 BPU supra - coming back out of the shop soon with a new gunmetal pearl paint. And a few other goodies.

A 3" pipe has plenty of flow for BPU and even most singles. When you start getting to 700 or 800rwhp there may be a difference. Some would argue that a larger pipe would increase hp and decrease torque but there will be no difference at BPU levels. You could always just get the 3.5" in anticipation of something bigger and better. If you plan on getting the 3.5" though, make sure to get a catback that is at least 3.5" too.