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Ok so to start the truck is a 2009 Silverado 1500 2wd 4.8l uses e38 ecm t42 Tcm with 4l70
I recently installed a 6l90 trans from a 2017 express 2500 and changed the tcm to the 08-11 tcm. My mobile...

these are the log files with the long tearm trims on

I got rid of all of the rear o2 codes it was setting no codes come up.

Thanks for the information I will start researching those 3 things and see if I can get them dialed in.
I?m sure I will...

Did that smoke tested exhaust no leaks.

i am not a tuner for the most part just a normal mechanic.
i have been using hp tuners to change tire size gear ratios trans tuning code and vats deleat on swaped vehicles.
i have a 2009 silverado...