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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > Boost issue? help me



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      04-15-2024, 11:23 AM   #1
UnlikelyBug
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Drives: 2011 335i
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Boost issue? help me

I'm trying to figure out why my boost is above the boost target from 2k to 4k rpm. Specifically the spike around 4k but also targeting 0 psi and getting >1 psi at the low rev and throttle ranges. I'm normally tuned stage 1 with MHD as I have a metal charge pipe and a larger intercooler but this log was on the stock map. I also hit 17 psi on the top end but I think that could be from the throttle closing on the upshift. Is that right or is that an issue as well? For background I have 122k miles, mostly stock except for charge pipe, larger intercooler, and dv+. Just had to replace my HPFP and I had a suspected bad coil pack cause a misfire on cylinder 1 after this log (I moved that coil from 4 to 1 previously to see if the misfire followed).

https://datazap.me/u/julius/stock-ma...m=0-122&mark=3
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