Daniel60

I'm anticipating a Christmas check soon (my money a course) and I wanted to ask those who have the Mac Prochamber that uses your stock cats if you lost any horsepower or enjoy the same. I'm wanting this stickily for sound. I have read and heard a couple clips thinking it will sound more like the 2-valve. Either way Mac makes great muffler products. People actually think I polish my mufflers when they are stainless steel.