Originally Posted by chasing-infinity
I'm planning on deleting my primary cats and was curious what this would sound like with the OEM exhaust mod. Anyone done this? Thanks!
If you like bat shit loud exhausts, you'll be fine. "Loud" is quite subjective, especially a tasteful "Loud" that you believe represents the M3 properly. To your point, just try it, and switch back after if you'll can't stand it. Worst case, remove Test Pipes and keep the OEM Exhaust Mod.