BMW Z4 Straight Pipe

This is a 2006 BMW Z4 3.0i, this is a catback straight pipe system, no resonator, no muffler, only has front cat everything else was cut off and I just put a 2.25’ piping in the place of the muffler, back cat, and some factory exhaust piece “ I did research and can’t find out what it was”. I will post another video of a rev at idle.

This is an automatic trans Z4, when driving, every time you let off the gas it pops, I will probably post a video about this later.