plus quad pipes
'13 750xi muffler delete, straight pipes but kept center muffler, resonators, and cat
Holy shit it's fast.. faster too because the twin turbos exhaust stroke aren't fighting against the backpressure making high RPMs keep picking up instead of bogging down.
I had to plug the exhaust valve flap vaccuum line to remove the EVAP soft code that comes up later. I cleared the code after plugging it with 3/8" pipe tubing thing then capped the otherside with a vacuum plug. I couldn't find where the vacuum leads so I just did it this way. I can take pix of it later but I know you guys will love the video and what I've done.
