Datalog Fueling woes and Cyl5 songs

[ShocknAwe]

Would love the community input here, I've ordered O2s given the 2C2D error code that comes back. Also had a cylinder 5 misfire during a quick loaded log. Otherwise no codes from MHD.

Will be checking out plugs, coils. Both are new in last month when I swapped to the NXM B58 kit. Coils are B58 eldors. But logs look fuel related.

Injectors are index 12 but 4 years old now.

Have tried resetting O2s, restarting, clearing codes but seemed to get worse over a 10 mile drive home so it's parked. Car gave me no issues until the drive home from work today, idle destabilized at a light and car generally feels like it's down a cylinder.

Multiple logs in this datalog post.

O2s vs injectors or...

www.spoolstreet.com

 

[ShocknAwe]

Quit being a fuckn sissy and put that shit back together.
I told you most likely you are fine (no homo)
Don't come back till car is running

Haha thanks man. Feels good to do things thoroughly and have some data backing up a repair prior to throwing parts at it. Plus now I know my compression is the same across all cylinders. Not bad for 120k on the block.

 

[SlowE93]

Haha thanks man. Feels good to do things thoroughly and have some data backing up a repair prior to throwing parts at it. Plus now I know my compression is the same across all cylinders. Not bad for 120k on the block.

What are the mods ? Turbos ? Psi ? Etc

Oh, don't forget oil change asap.

 

[ShocknAwe]

What are the mods ? Turbos ? Psi ? Etc

Oh, don't forget oil change asap.

Oh yeah I bet the oil is super fuel diluted. Going to do VCG while the injectors are out. Already did OFH/CHG sensor gaskets belt etc recently and have it sitting on my bench. Interestingly my plug gaps were not where I set them, they had relaxed out a few steps.

Power Mods: N53 head with shrick low lifts HP800 turbos, coated bearings down below, DI only 93 pump at ~18 psi. Redline 8k. Prob 30k miles on this setup. Prior to that I did ~80k on a roughly FBO car. I've been pretty aggressive with maintenance this is the first time I've been surprised with a malfunction which is why I figured it was done.

Decouplers and O2s came in this evening, just need the injectors...

 

[SlowE93]

Oh yeah I bet the oil is super fuel diluted. Going to do VCG while the injectors are out. Already did OFH/CHG sensor gaskets belt etc recently and have it sitting on my bench. Interestingly my plug gaps were not where I set them, they had relaxed out a few steps.

Power Mods: N53 head with shrick low lifts HP800 turbos, coated bearings down below, DI only 93 pump at ~18 psi. Redline 8k. Prob 30k miles on this setup. Prior to that I did ~80k on a roughly FBO car. I've been pretty aggressive with maintenance this is the first time I've been surprised with a malfunction which is why I figured it was done.

Decouplers and O2s came in this evening, just need the injectors...

 

[SLOWESTN54]

I TOLD YOU SO. Happy it worked out. Been following the build for a min

 

[SlowE93]

Running ?

 

[ShocknAwe]

Running ?

Injectors just came in. Now just gotta find time to wrench.

 

[ShocknAwe]

Day off. Remove and replace. Got new index 12s from BMW courtesy of @island road . Injectors pulled with PRs incredibly sexy tool. VCG gasket wasn't disintegrated but was hard and flat, spots of oil seep around every interface back by bank 2, worth the extra time. Cleaned up a ton of dirt. Oil change next and code the injectors with protool.

 

[ShocknAwe]

It's Alive! Thanks to all who helped.

Coded injectors with protool in about 2 minutes, cleared codes, then reset all fueling adaptations in MHD. Probably will do a second oil change here in 500-1k miles to wash it out.

Lambdas make sense again and STFT at idle are registering.

New O2 sensors on next day off, and time to start leak hunting, I saw oil drips under the rear hot side and down the rear downpipe. Bet it's the turbo oil lines. I fucking hate leaks.

 

[SlowE93]

Told you it was fine !






















Sissy