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BMW 3-Series (E90 E92) Forum
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Low boost no matter what
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01-22-2025, 08:09 PM | #1 |
Private First Class
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Low boost no matter what
I am a total loss. I started with the 2C57/low boost code (no other codes) and the reduced output engine light at any acceleration above 3k. I flashed MHD stage 1 and no more code or light but still low boost and comes on slowly. I have tried multiple custom maps and MHD, but nothing. If I flash MHD stage 0 or stock PPK, code and light come back. MAP sensor replaced, boost solenoid replaced, 3 smoke tests and zero boost/vac leaks, vac lines good, and wastegate appears to be operating as it should via logs. Timing looks good, and IATs are good. No WG rattle or smoke out exhaust. Only mods are a Midnight Motorsports intake and all boost pipes replaced with metal. 2011 N55 with 54k miles.
One thing of note, the code and problem started the day after having the VCG replaced. But, could just be coincidence since I didn’t go over 3k with the leaking VC prior. Log with stock tune and code (limited perameters) https://datazap.me/u/gashum3/pull-lo...4-12-22&solo=4 Log of MHD stage 1: https://datazap.me/u/gashum3/mhd-v-1...og=0&data=3-11 Log with “custom” map https://datazap.me/u/gashum3/custom-...og=0&data=4-20 Log with another “custom” map: https://datazap.me/u/gashum3/custom-...og=0&data=4-20 And log with MHD stage 0 and code: https://datazap.me/u/gashum3/mhd-sta...og=0&data=4-20 |
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