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Fixed now! It was the issue date. Thanks for the prompt response!

I am having the same issue and I checked the license info a couple times to be sure I entered it correctly. I purchased mine directly off the EFILive site and the license card shows an issue date...

Thanks I will take a look at the file. The issues I am having now are: engine tries to stall sometimes when I am cruising along and push in the clutch to stop, and I keep getting a DTC from the IAC...

Thanks! I was comparing some different tuning files and noticed that was the big difference. It looks like my next tuning investment will be a wide band O2 sensor. :)

I don't have access to a wide band o2 at the moment, but maybe I can find someone to loan me one temporarily. All sensors on the engine are stock. Thanks I will look at the 7.4 tune on that website...

Thank you both. I modified the abuse mode parameters and that did the trick. Now I am wondering if I have a sluggish O2 sensor making the LTFT on one bank lean out more than the other by about...

I just completed the 0411 PCM swap on my 97 model Vortec 7.4. This engine is in an 89 suburban using a standalone wiring harness, from Painless. I have loaded the calibrations for the 2001 Express...