Quote:
Originally Posted by andrey_gta
This isnt my car 
I am just scoping info from the german 1er forum
To be honest I am not 100% sure the video has the 135i Performance muffler. He certainly has the Y-pipe from it which deletes the resonator. The n55 midpipe remove the secondary cat. For some, headers may not on their list, so this is prob the next best thing.
I posted the pictures to show how 135i spec mid pipe is modded to 128i, it appears he cut off the ends of his 125i/128i mid pipe and welded them on |
Hey! (6yrs later) So I’m looking into this for my 128i. I guess it’s pretty much recommend to have the 135i mids unresonated (BMP Y Pipe) Does anyone run the resonated N55 stock mids with stock 135i axle back?