Originally Posted by E93Blackhawk
Hi there guys
Stock 335i apart from JB4 BMS DCI.
Im getting on the golf tee mod but I'm also going to a sec cat delete for a bit of a louder throatier sound, gonna weld them back on when i get catless DP's.
I have a e92.
What is the diameter of the piping needed?
and I've heard the factory use 409 SS tubing? If not what would be okay to use? thanks
Use the JB4 to keep CAN flap open, and you won't need the golf tee mod