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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 > Problems with the E90 :/



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      11-30-2022, 11:11 PM   #1
lemansbluen54
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Problems with the E90 :/

Have a few different problems with the car, specs and mods are listed below

2009 335i 6MT

Intakes, Inlets, LPFP, DPs, OCC, IC, 17t turbos
Car is currently running MHD Stage 2+ as I am waiting on my custom tune


Problem 1:
Fuel gauge is incorrect after LPFP build. I did not remove the fuel float when i built it so it should not be off

Problem 2:
Blower fan randomly cuts in and out

Problem 3:
Misfires in bank 2, no other codes to support, stops misfiring after a few minutes or if codes are cleared, cyl 5 seems to be most problematic, then 4, then 6, but all 3 are common misfires here.

Car has index 12s, pr coils, and 1 step plugs
Will attach log below
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2009 E90 335i 6M/T
VRSF DCIs, ARM Charge Pipe, Tial BOV, Precision Raceworks Coil Packs, ARM Catless Downpipes, Boost Monkey Cowl Delete Filters, 2" Silicone Inlets, 17t Turbos, ECS Coilovers, Turner Front End Links, Walbro 535 LPFP, BMS High Side Catch Can, ARM 7" IC, 335is Clutch Kit, MHD Stage2+ 93 Oct.

Last edited by lemansbluen54; 12-28-2022 at 04:30 PM.. Reason: updated information
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      12-01-2022, 02:26 AM   #2
Carlife851
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Waiting for professional engineer answer
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      12-28-2022, 04:43 PM   #3
lemansbluen54
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here is the log

it appears that stft bank 2 is sitting between 3-5% below bank 1 constantly
Attached Images
File Type: pdf 2022-12-28 15_21_33 IJE0S v10.0 Stage 2+ 93oct_98ron.pdf (486.9 KB, 16 views)
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2009 E90 335i 6M/T
VRSF DCIs, ARM Charge Pipe, Tial BOV, Precision Raceworks Coil Packs, ARM Catless Downpipes, Boost Monkey Cowl Delete Filters, 2" Silicone Inlets, 17t Turbos, ECS Coilovers, Turner Front End Links, Walbro 535 LPFP, BMS High Side Catch Can, ARM 7" IC, 335is Clutch Kit, MHD Stage2+ 93 Oct.
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