It's not fuel cut. Injector pulse width goes to zero during a fuel cut event.

 

I can 100% guarantee I did not drop a rag into my IC piping, air inlet, etc.

The car did a 3rd gear pull perfectly. On the next pull, I heard the pop and the car lost all power. Got on the gas and it did it again. After that, the pull are without incident but 'Been rich ever since.

Not a rag, but I appreciate the suggestion. It's always the weird, unexplained things that cause problems and we never think of them LOL

 

Ok, I misunderstood. I thought the original issue was persisting.

 

Just the running rich part.

 

Is it still spooling slow?

If it's running rich, may just need to adjust MAF scaling or the fuel table, or something fueling related (consult your tuner lol). The new MAF may read slightly different than your old one

 

Yes. I found a possible cause. Fixed. We'll see, now. If all is the same, I'm just going to start leaning out the fuel tables.

 

This didnt show up on the BLT

 

Bacon, lettuce, and tomato?

Replaced the coupling. No change.

 

Boost, leak, test.
Damnit, was hoping that would be the gremlin

 

me too LOL. That would be too easy.

​​​​​​Maybe it's leaking from a vacuum line after the TB.

 

Have you run a compression test?

Need to simplify it, I spend all day working on cars, it's way too easy to think of something complicated. Engine is air, fuel, compression.

Boost leak test shows nothing, rule that out. Maf readings are same pre and post issue correct?

Keep in mind, air can mean in and out. Do you run a cat on the car? It hasn't come loose and clogged exhaust or something, right?

BTW, sorry these are random rambling's, but are all potential clues/causes.

 

Compression was perfect a week ago; I checked after break in.
I don't have MAF readings from before, but they are normal now.
No cat on the car.

 

Checked cam timing?

 

Timing belt jumped? Hmmmm...

 

Update:

viewed logs again. I used to reach 290 load and now I'm in the 305-310 area. Sounds like a boost leak to me, but I've tested at the turbo inlet and the TB. I have yet to find any leaks ANYWHERE. Especially enough to cause a 200-250RPM difference in spool time.