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      12-12-2013, 07:34 PM   #31
435iaffair
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Drives: 435i, Z4M, M157 E63
Join Date: Oct 2013
Location: San Marino, CA

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2014 435i  [4.50]
the upside to piggyback tunes, at least for the n54/55, is they allegedly won't be detected by the dealership, at least according to a few tuners I spoke to. I'm still skeptical about that though.

when i was playing with cheaper turbo cars I always went with custom tunes as the gain + reliability were so much greater, but the S55 probably wouldn't be cheap to replace

gotta pay to play