BMW 335i N54 manual (Secondary cats delete, 335is Muffler, Down pipes, Intakes, MHD Stage 1+

2007 Bmw 335i N54 manual - I have Secondary cats deleted, Downpipes, a 335is muffler, dual intakes and MHD stage 1 plus tune.
I highly recommend getting a 335is muffler. It’s basically a muffler delete but very refined. I will make a video on the difference between stock muffler and the 335is mufflers from the inside too just to show y’all.

[@dewaynecarter1795]

This is by BC, Bako in Cali.

[@asian4747]

engine wont last long if you keep doing that on cold oil