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Originally Posted by cranelec
Borla refuses to guarantee fitmen for an '11 E90 LCI335i xdrive. Ironically, Borla grantees fitmen for the 2007 through 2010. Please educate me
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Not sure why they don't, been told by multiple people that the n54 and n55 catbacks are interchangeable, it's the coupe vs. sedan and rwd vs. xdrive stuff that seems to matter.
Quote:
Originally Posted by Wrecker 426
So if I still have the stock down pipes but gutted it’s no good?
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Downpipes designed to fit with the stock catback (i.e. all of them) should have the same geometry.
I had a 3.5" catback from another manufacturer and could never get it to stop rattling on the chassis brace. Do a secondary cat delete and maybe an axleback and call it good. Or just get a shop to do the weld, it's not expensive and the vrsf exhaust is still cheap af.