Has anyone deleted the secondary cats on their 5th Gen? Wondering if this provides a noticeable increase in power. Have this done to my E92 M3 and got a nice bump, maybe 10whp.
I've seen the cat-back options from Magnaflow and Borla but haven't seen anything involving a cat-delete with a new y-pipe, would get something custom made if it's worth it.
I've seen the cat-back options from Magnaflow and Borla but haven't seen anything involving a cat-delete with a new y-pipe, would get something custom made if it's worth it.
