Quote Originally Posted by In-Tech View Post
The early and late TB unit can basically use the same calibration, not perfect but close enough. The 7060 runs a 4L80e and your original bin file(BANF) was 7.4L 4L80e so, not sure why you went to the red/blue right off the bat. The egr can cause much grief if one is EVRV and other is solenoid(didn't check your files). I would turn off egr for now till you verify wiring which it sounds like is your issue somewhere. Bottom line is you can swap early and late TB units(as long as fuel pump keeps up) and not change the cal. Not that it doesn't need a cal improvement but stock will still get you down the road :)
I swapped ecu because of the 4l80e. The trans was 95 and up, the 7060 ecu/prom would not control it correctly. something was different with the pressure control solenoid and how the ecu controlled it. I believe the 93 4l80e had a program that caused solenoid to perform a cleaning routine every few seconds or something...not sure, just know that it was not controlling it right, and trans would not shift correctly. The swap to the 4l80e was what started this whole nightmare! As far as egr goes, I did swap to the solenoid type and rewired the harness for that egr to work.