Hi guys,
I have a 2012 135i that i've modded with a intercooler and high flow cat / downpipe.
It now runs awesome with a custom MHD tune, however there's now an unwanted drone between 1800-2500 RPM under load (yes, even with the OEM muffler) which is especially annoying at highway speeds.
I've been looking at my options here and came across the vibrant resonators. My mechanic believes they can only fit one large resonator in, however looking at the
n54 threads it seems they manage to fit two singles side by side.
Does anyone know if i'll be able to squeeze two resonators in on the later 1 series, and which specific vibrant model i should be purchasing so i don't need to create any unnecessary flow restrictions with piping changes?
Thank you kindly.