AFR's 10.00 when any boost given

[RiderDown]

Chasing this misfire issue after trans swap. I bought the truck with the engine turbo setup and it wasn't quite right. It's much worse after the trans swap. When I ramp into the throttle the AFR gets richer and richer until my AEM wide band reads 10.00. It will start misfiring at that point. Is it in the tune? The truck has always run VERY rich.

2009 Canyon 5.3 TC76 turbo

[blindsquirrel]

What injectors, where'd the injector data come from, and what is the fuel system?

I don't see a wideband being logged, though I am probably just overlooking it. Right?

[blindsquirrel]

Why is P0103 set to No Error Reported?

[edcmat-l1]

Yeah MAF is not failed correctly so it's not in SD. PE is commanding only 12:1. VE doesn't look right above 105 Kpa. Injector data does not look familiar. You're not logging injector ms or DC.

[Alvin]

Chasing this misfire issue after trans swap. I bought the truck with the engine turbo setup and it wasn't quite right. It's much worse after the trans swap. When I ramp into the throttle the AFR gets richer and richer until my AEM wide band reads 10.00. It will start misfiring at that point. Is it in the tune? The truck has always run VERY rich.

2009 Canyon 5.3 TC76 turbo

It's in the tune. I'd be careful. got a good bit of boost and the knock sensors look neutered too.

[edcmat-l1]

It's in the tune. I'd be careful. got a good bit of boost and the knock sensors look neutered too.

Yep didn't even look at that but they're effectively turned off.

[RiderDown]

Here is some more info. I'll have to set up the aem to log in vcm scanner.
Screenshot_20230525_110057_Facebook.jpg

[edcmat-l1]

Injectors aren't setup correctly for a return system. The offset isn't correct for FICs. Where is the FF sensor located?

[blindsquirrel]

Here is some more info. I'll have to set up the aem to log in vcm scanner.
Screenshot_20230525_110057_Facebook.jpg

Is this a thing we do now and it's considered normal? A phone screenshot of text? Really? I'm on the wrong planet.

[RiderDown]

FF sensor is located to the left of the transmission

[RiderDown]

This was a screenshot of the listing my brother sent me before I bought it. Sorry to trigger you, didn't have time to transpose it though.

[RiderDown]

Why is P0103 set to No Error Reported?

I do not know, I bought the truck like that.

[RiderDown]

It's in the tune. I'd be careful. got a good bit of boost and the knock sensors look neutered too.

That's alarming. Given my lack of tuning experience, I think it might be best to get a pro to tune this one.