N55 Stage 1 BMW Performance Mapping (Harness B) - $300
Exclusively for the BMW 2011+ BMW 135, 335, 435i, 535, 535xi, X1, X3, X5, X6 & 2010+ BMW 535i GT N55
http://burgertuning.com/N55_Jb_BMW_P...nce_Tuner.html
Wife doesn't want to worry about having to take it out when she takes her car for servicing.