Originally Posted by KudosM3
Great write up!
Are you planning on removing the primary cats and a tune of some sort?
How would that impact upon the noise levels? Ie would you say there is room to manouvre without sounding like a cheap loud exhaust
I'm thinking as an alternative, to remove the pre cats and leave the back box OEM
I definitely have no plans to do anything else right now. To put things in perspective, while I owned 3 E46 M3 Convertibles in the past, this is the first time I have ever modified a car. So I'm pretty conservative compared to many people on these boards.
Unfortunately I have never heard a cat delete so it's hard for me to give you feedback on it. Sorry I couldn't be more helpful...