thanks man! Also i don't have my downpipe in yet! I am going to be doing that all together next week. It will be interesting because i will be the first n55 335i with a single mid pipe/single downpipe mated to a muffler. I'll be updating this thread as i put on more mods and use nos octane booster with the 91 octane!
Custom single exhaust/downpipe (no split)