Originally Posted by MDORPHN
I'm intrigued by using the N55 midpipe, but wondering whether there will be any clearance problems between the M3-sourced rear subframe on our 1Ms and the resonator at the rear end of the N55 midpipe.
I wouldn't think so. I had the M3 suframe bushings on my 135i and granted, didn't have an N55 midpipe, but no issues with either the stock midpipe nor the MadDad.
Is the resonator at the end of the N55 really that much bigger than the N54? The bushings didn't seem to be bigger, it was just their construction thwat was different IIRC.
2011 BMW E82 1///M: AW, all options; Renntech, Akrapovic, Forge, P3, RevoZ CF bits, many mods
1988 BMW E30 M3: Hennarot, S14, stock
2016 Porsche 981 GT4: Guards Red, LWBS, SC, full leather
1998 Porsche 993 C4S: Zenith Blue, last aircooled widebody, Bilstein PSS10, Fister II + Fabspeed exhaust
2008 Audi B7 RS 4: Sprint Blue, Audi Exclusive Euro Bucket Interior, Premium+Titanium, many mods