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I have the 8.1 in my avy that I will be getting into tuning soon. But torque management in the allison on my diesel was ridiculous, There is one nber somewhere in the tune that says max power...

Has anyone else had to deal with a similar situation in ny

That's disappointing, I'll have to contact ny and ask them what to do.

I would like to do a conversion from my 8.1 engine to diesel duramax. When I am done will I be able to change the vin in the diesel pcm to be the vin that matches my body vin so I can plug into ny...

I have a complete running 2005 lly diesel truck as a powertrain doner into my 2004 avalanche. As it is complete and running I am assuming that swapping over all the wiring harnesses for the pcm and...

I have the same issue somewhat, I changed the rear of my 2 tanks to a new size and have just not been able to figure out the proper equation the the truck uses to display fuel info. If I change the...

I wrote that whole explaination for "NO"


I feel like the last guy in the bar after talking up the only girl for 3 hrs.

I think I have a beginner understanding of the factory computers so I need an advanced answer. I have an 8.1l motor which has a wasteland to shop for parts. I would like to convert to a 502 or 454...

Yep! Most of anything I find for the 8.1 is for marine use. If there is any upgrades it is VERY expensive. If I convert a 454 based block over to running on my 2004 computer in my truck then I...

I am going to look more into what the 454LSX is. Thank you

I have a 2004 avalanche with the 8.1L

I bought some perf parts from the only company I can find for the 8.1 and the stuff was mediocre and expensive.

I want to do some more modifications but I...

I have the same problem on a 2004 8.1l truck. At idle the trims are as far off as you mentioned and even pulse widths are different. 3.9 to 3.6ms. I will await some smart people to answer in this...