rodman9 your exhaust sounds pretty darn good to me! N55's sound better than N54's(what I have) bc no secondary cats to muffle that glorious sound of the PE(Performance Exhaust).
I take it you just installed the PE on your N55? Or did you just purchase your car? You must also have the PPK(come standard on the 135iS models)... ?
After you put a few thousand kilometers on the exhaust... it gets a deeper and nicer tone to it.
Here is what my 135i sounds like with a PE and a German sw tune. I do not have a PPK base tune - so my car pops and burbles less. The red MINI behind me was a brand new JCW 2016 model.
