Quote:
Originally Posted by 08z51c6
In track mode NPP is essentially an open exhaust is it not or am I wrong?
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No, although a second straighter path opens, not all of the gas will go straight out of that one opening so some of gas and noise waves will still be muffled to an extent.
Flow rate wise it should be pretty close, but noise wise the muffler will still have an effect.
See the videos of the qtp cutouts to see what a proper open exhaust sounds like.
The easiest way to make the NPP sound a little louder would probably be secodary cat delete.