[M_Mouro]

2011 535i xDrive N55 - 98,XXX miles
MHD Stage 2+ flash / Upgraded intercooler with Charge pipe / Downpipe/ BMS Intake / Precision Raceworks External Coilpacks / NGK Iridium Colder plugs

Valve cover replaced. Valvetronic Gasket. New spark plugs gapped .22.
Prior to gasket replacement I was getting idle surge 40-90RPM at idle and noise from PCV puck on top of Valve cover.

Pulled codes ands got a code for the upstream O2 Sensor and shadow codes for Fuel Pump Low Pressure. Fuel Pump code comes and goes. Wasn't there last 3 times I checked for codes.

Thinking it may be a leaking injector I replaced them all with the EU5 from FCP Euro. (Dealer said EU5 but BMWTIS said replace with EU6. Kept an old injector to find out at dealer which one the old ones were) Updated the injector values using ALLTEL.

Started the car and I still have the idle surge except now I'm no longer running 14.7 stoic either. At idle it is idle surging and AFR will "surge" as well up to 15.2-15.7. Battery voltage is also going down slightly in sync with the idle according to my P2 gauge. Could I have been sold a bad injector? The install went smooth and torqued each injector to 2.5nm except cylinder 6. torque wrench went a bit past to 3.2

Also getting a code for the Tank Vent Valve: Short circuit to earth. Will be replacing the Vapor Canister Purge Solenoid in between the Charge Pipe and Fuel Pump.

and the kicker here is my MHD app has never been able ro connect reliably to the car to be able to log. Stays stuck on ready

Help lol

[M_Mouro]

Bump