ORIGINAL: flygilmore
I agree and also the Macs tuned muffler but...... neither are quite like the ferocity of a good header/pipe setup!![:@]
Recommending a tuned pipe for 3D would ruin the experience IMO.
95% of 3D is below 1/2 throttle if you have selected the proper engine.
Tuned pipes are great for WOT but really kill the midrange which is where you should be at most of the time.