[Cabdriver]

Hey, need some SMEs to chime in on my log:
https://datazap.me/u/cabdriver/stage-3?log=0&data=3-23
So at about 6.3k, the engine started to stall out at full throttle and threw the CEL and started sputtering.
Pulled over let it idle and it cleared on its own and returned to normal. The codes were:
2AAF fuel pump, plausibility
29d2 misfore cylinder 6

I searched about this code and not too concerned about the 2AAF but trying to understand the misfire issue. Please review log and let me know if you have suggestions.
Coils are oem, new ngk +1 gapped 22 and full bolt on out and inlets. Turbos are new stockers replaced 10k ago by bmw. Bank 1 injectors replaced woth index 12s 2k ago.
Is it the tune or hardware, eg coil, injector etc.

[HKD126]

Swap coil from cylinder 6 with a known good one, let’s say from cylinder 3. If the misfire moves to 3 it’s the coil. If not, try closing the gap to .020”. If that doesn’t help it could be an injector or carbon build up.

[Cabdriver]

Just did carbon cleanup like 2k ago, so will look to swap coils.
The main issue i have was there a momentary coil malfunction and hence a fuel injector cutoff? The hpfp was pumping fine untill the event then dipped for a split second but then almost immediately recovered so wondering if the hpfp is programmed to stop delivering fuel because afrs for bank 2 shot up and increased for bank 1 (although not as much). Lpfp pressure seemed fine though the whole event which leads me to believe this was a spark issue...

[dpaul]

You just replaced bank 1 injectors only 2K miles ago. You don't say why but misfires are a common symptom. Now cyl 6 is misfiring. So, why isn't your first thought that bank 2 injectors need attention?

But sure, do a coil swap, then a plug swap. Cheap and easy tests.

[335iN54enthusiast]

Hi....I agree you should update the rest of your fuel injectors and if that doesnt solve the misfires....you could have a bad coil. Maybe suggest ditching those coils and upgrade to the new style aftermarket coil packs that eliminate misfires now mind you I dont know what kind of power your pushing but usually guys will put this style of coil in above 450..500+hp i think dont quote me on that...

Please subscribe to my channel https://www.youtube.com/channel/UCUHulMJ4lnp96CSleQFSvXw

[Cabdriver]

Originally Posted by dpaul

You just replaced bank 1 injectors only 2K miles ago. You don't say why but misfires are a common symptom. Now cyl 6 is misfiring. So, why isn't your first thought that bank 2 injectors need attention?

But sure, do a coil swap, then a plug swap. Cheap and easy tests.

Dpaul, bank 1 injectors were leaking pretty bad....i have never actually had a misfire before. The only change i made was some edits to the tune to reduce the top end taper a little. Bank 2 will eventually need to be changed im sure they will start leaking at some point too, the signs are fairly obvious when they do...
Thx!

[Cabdriver]

Originally Posted by 335iN54enthusiast

Hi....I agree you should update the rest of your fuel injectors and if that doesnt solve the misfires....you could have a bad coil. Maybe suggest ditching those coils and upgrade to the new style aftermarket coil packs that eliminate misfires now mind you I dont know what kind of power your pushing but usually guys will put this style of coil in above 450..500+hp i think dont quote me on that...

Please subscribe to my channel https://www.youtube.com/channel/UCUHulMJ4lnp96CSleQFSvXw

Thx, i am probably somewhere around 450bhp +/-.