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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > boost leak or something else?



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      07-17-2022, 08:32 PM   #1
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boost leak or something else?

https://datazap.me/u/wildwes/log-165...=0&data=2-3-21

Hey guys, I have been underboosting by 3-5psi for a while now not sure what it is, I have had multiple misfires and I swapped individual ignition coils in the span of the last month since I just got new turbos and for some reason I just started misfiring, maybe because it isn't used to the high boost. Could someone take a look at my logs and lmk if it is a boost leak or vacuum leak somewhere or if its an issue with my ignition coils. I think spark plugs were done a few thousand miles or less since I took one out and it looked pretty new.

also could someone tell me why my accel pedal pos peaks at around 90? Why is it not 100?

e92 335i 2007 N54
vargas turbo tech oem turbos
vrsf cai
vrsf downpipes
vrsf 5inch fmic
vrsf chargepipe
tial bov
mhd stage 2+ 95 oct v10 tune

stock vacuum lines I think, (they look old)
new boost solenoids

I had a huge leak from the right side of the intercooler the chargepipe area but I fixed that since it was really easy to tell, but not sure if it could still be that area since I am boosting pretty high so it could come loose/leak at higher psis.

ps. I am going to do my vacuum lines next week they are long overdue ik but I doubt new vacuum lines are going to increase psi by 3-5.
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