Since you've got upgraded turbos, IMO it'd be a good idea to get a custom tune from somebody like Ken at Wedge, Motiv, etc.
I live in Milwaukee and work in Tosa, what color is your 135i? I've seen a handful around the area recently.
Yes I was thinking of going with Trebila, he has a lot of great reviews on N54tech.com.
My 135i is white, looks completely stock right now minus blackline tail lights and black grills... Its a sleeper, ha
BMR 3.5" exhaust for e8x / 135i for sale. Exhaust is about 4 months old / has minimal wear. There is one scrape on muffler, but doesn't effect anything. Comes with clamps.
https://www.blackmarketracing.net/product/bmw-135i-n54-n55-35-exhaust-system
Paid $1300 just a few months ago, asking SOLD
If only this were available a few months ago
Yes its really nice exhaust, just too loud for me.
The perfect time to install a "new" exhaust is while changing out the clutch... Just saying, lol.
