How much of a noticeable difference will there be in sound and power gain with the entire MAC exhaust system (cat back and off road prochamber) or just the prochamber and my stock system? Thanks.
I have a MAC cat back and Prochamber. I put just the cat back on a few months before I put the Prochamber on. I really didn't notice any difference in performance with the cat back, but it sounded a little better. The most noticeable difference came with the Prochamber. It made it much louder/meaner sounding and definitely an increase in power. If you decide to leave the factory cat back I'm sure it will work just fine with the Prochamber alone.
I think that I'm going to go MAC all the way as well. But I'm probably going to have to get Hi Flow Cat H-pipe which will suck. Oh well.
I think I'm going to go Long Tube... H-Pipe... and then cat back.
Tell us how it goes I'm interested.