Quote:
Originally Posted by x5m50i
I did this on my modified M50i  . OPFs out, replaced the cats with two 200cell ones. Damn, it'a loud and a little bit drony at 3-4k rpms. Sounds like the concept M8 Competition on youtube.
I will reinstall only the OEM mid-resonators |
That is exactly why I am keeping those resonators for now.