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09-17-2021, 05:10 PM | #1 |
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N55 stalling at start, not hitting target boost
Hey guys,
I currently own a 2011 135i DCT. FBO wedge tuned stage 1 pure turbo 91oct tune I am having the weirdest trouble with this car I need some help! car has 125k miles It started off by stalling on me on a cold start, I put the car into gear, and when I reached a stop, it died. I started it back up and drove just fine. Later that day, I went to turn it on and it stalled again right after turning it on. I did some data logs and to be completely honest I have no idea what I am looking at, but there is some MAJOR timing corrections, I am not hitting my boost target and the car just seems to stop and drive funky. I don't know what to do, I called BMW and they think its a boost leak, or a HPFP issue. However the fuel rail pressure seems fine. this is a 3rd gear pull https://datazap.me/u/alxsantan/log-1...30-31-32-33-34 what do you guys think? |
09-17-2021, 05:14 PM | #2 |
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09-17-2021, 06:38 PM | #3 |
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09-17-2021, 07:20 PM | #4 |
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09-18-2021, 08:00 PM | #6 |
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09-19-2021, 12:54 PM | #8 |
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about a year ago i had the same issues, turns out my rail fuel pressure sensor died
this is the part number 13537620946 it is cheap enough and an easy swap for you to not try it. just put a towel under the sensor when you take it out to absorb some of the fuel that will drip out
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135i N55 / KW V3 / MHD Flash / Tons of grip mods / CP-E charge pipe / CP-E 7" FMIC
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09-19-2021, 01:26 PM | #9 | |
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Did yours show good fuel pressure like mine does? I am ordering it now just incase. Figure I will start with the small stuff |
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