[Dantilla]

A 3" is not optimal for a street-driven NA.

My race car has a 3", and while it improves flow at sustained high RPMs, there is a big loss of low-end torque. This was immediately noticeable as soon as we put the race exhaust on. The car will be far more fun to drive with a 2.5 diameter exhaust.

The car used to be driven on the street often, but with the 3" exhaust, it became too noisy. I found myself constantly trying to keep the rpms low, with less throttle to keep the noise, both inside and outside the car, down.

I no longer even license the car for the street. I just trailer it to the track.