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Title: Overboosting after installing various parts BMW 420i ZF8 B48 MG1CS003 Post by: BMW416i on November 23, 2021, 02:12:07 PM Hello Everyone,
i have recently encountered a problem with my BMW 420i b48 MG1CS003 ZF8. Running stage 1 remap. I have installed: MST cold air intake, FTP charge pipe, 3.5' catless downpipe. All at the same time, car went into limp mode and CEL. Went to tuner; disabled EGR and dust particle filter sensor. still shocky and stuttering. Tuner says it limps because overboosting, says can be because of the intake and/or chargepipe. They could not get the car running fluidly, have log files of their run. Im thinking next step would be smoke testing the boost pipes and intake. any other suggestions? I am now back to stock mappings. Doesnt limp, still is a bit shocky on lower RPM's (misfire? knocking?) Thanks! log : https://www.autotuner-tool.com/nl/log/9bf3993837636752643eb1a628e06fa7131b3991e5d60bbbe5ca46d5dec10928 |