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IC, thank you for educating me. I shall look for a 12613246 60e tune then. Anyone out there have one handy before go downloading 1M files from the repository??

121611 and the log of the last drive with the tune-up

Good thought, my bad.121610

So more info ... If I go to the calibration details page, it shows me a OS of 1213246. However the OS tab shows a OS of 1252068. I'm assuming the first OS listed was the original and the second is...

Also wondering if I might brick the ECU if I keep changing the OS. Is there any OS's I should stay away from. The ECU is a P59 from a 2006 Silverado 2500 6.0 DBW

On the OS tab is shows "Speed Density - 2 bar" "OS - 1252068" with an "apply code modification"

So I'm thinking my only 2 solutions would be to (1) find a complete stock 5.3/60e tune from the...

OK, so the skinny is I have a 5.3/60e combo in a swapped c10. The computer is a p59 from a buddies 6.0/80e swapped truck (he went TermX).

I got the harness and ECU swapped and got the thing...