Built engine high RPM hesitatiom

STE92

Corporal
Mar 3, 2017
224
83
0
Ride
E92
Just recently completed breaking in my engine and started the tuning process. Having a weird issue at high rpm, bank 1 AFR goes lean 20, car hesitates for a second and continues. I was thinking hpfp going bad, fuel pressure deeps for a second and recovers doesn't affect bank 2. I get no codes, any help will highly be appreciated? I'm running on fumes

N54
Closed deck block
JE pistons 10.5.1
Molnar rods
Arp bolts/head studs
Maximum psi hub/vtt bolt catch

P&P head
Supertech valve train
Shrick LL cams

DocRace kit GTx4088r
DocRace IM 750cc inj/index 12 inj
PR stage 3 full E85
Vtt shotgun
Vtt dual catch can
Jb4/mhd (v8bait)

Additional information

FirmwareInterfaceEngineTMAP_VAvgIgnDWPMethTriggerModeFFMethSafeModeMethAddMethScaleMethPSIVINE85_SetupVFF_Offsetfuel_30fuel_35fuel_40fuel_45fuel_50fuel_55fuel_60fuel_65fuel_70
30/139//2JB4 Android A330E Series - N541.9622.12401800990.0............NONE132505050505050505050

BoostSafetyPID GainAutoShiftRedFuel_OLFUA1st_limiter2nd_limiter3rd_limiterOptionsN20_TMAP6CylModeLastSafetyduty_15duty_20duty_25duty_30duty_35duty_40duty_45duty_50duty_55duty_60duty_65duty_70
26.0250000.00.00.0NONE141505050505050505050505050
 

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GreyNBlueE92

Sergeant
Oct 3, 2018
266
92
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27
OH
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2007 E92 335i
Im just throwing out the ideas... Maybe swap knock sensors, see if anything is touching them, if they are torqued correctly?? I have no clue, just figure its easy to do... Good luck! I just know I'd be losing my mind
 

Slowagon54

Corporal
Aug 21, 2020
200
94
0
Man thats bad. Its an awesome build, but it could be literally everything. V8bait knows his stuff. So no doubt the tune is good. As there are no codes thrown I would just tear the peripherals down and triple check everything.
 

STE92

Corporal
Mar 3, 2017
224
83
0
Ride
E92
At this point is not much it can be... harness check out...also dme. Coils...injectors... spark plugs, even replaced some sensor...no change... things hasn't change is tune. Hopefully hear from him
 

STE92

Corporal
Mar 3, 2017
224
83
0
Ride
E92
Man something so simple. Didnt even know there was a second spot the sensor fit... I'm glad is done and we can turn this thing up....ty so much everybody help and time
 
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NoQuarter

Major
Nov 24, 2017
1,662
1,066
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Indiana, USA
Ride
Z4 35is, 535xi, X5 35i
On the subject of weird things that can cause a problem...

The main power cable from the alternator under the IM near the HPFP.... if that gets left out of its routing path, I am convinced the EMI from it can affect the hpfp solenoid operation.
 

Tonyyycadena

New Member
Sep 18, 2020
3
0
0

can yall help me out on my issue too lol
getting a "superknock cyl 6" code, but seems to be leaning out up top.
20psi im good but anything above 21psi i get this lean out/superknock.

things ive done or changed:
plugs are new gapped at 0.018, new NTK O2's, new Cam shaft position sensors, new crankshaft position sensor, BMP Aluminum manifold Port injection with 750cc injectors, PR coils, cleaned out vanos filters, new index 12s (coded correctly), upgraded from MSD80 to MSD81, new knock sensors, checked compression (all 6 cly are good).

things i havent done yet:
cleaned intake ports, cleaned vanos solenoids, and checked leaked down test.

plz let me know what yall think and give me more ideas i can do to fix this missfire/supcerknock/lean up top.