hpt scans/reads the ecm perfect, so if i want change timing or etc , will it let me write the changes even if the car was previously edited with efi live
i tried googling past post , not getting a strait answer
i just dont want waste 2-3 credits to find out
If the computer isn't locked, I see no reason why you can't do what you wish.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
As long as a custom OS wasn't used with EFI live you will be fine.
How would I know if it has a custom tune
Read your tune and compare it to a stock file of the same year.
2013 OBM A6 CTS-V Coupe
Mods: Headers back Billy Boat Exhaust, GripTec 2.65, 8.6 PowerBond Lower, LSX Innovations Solid Isolator, ID850's, NGK TR7IX's, Accel 9070CK Wires, Spectre CAI, SRI Ported Throttle Body, SRI Catch Can, NGK AFRM, 160* T-Stat, 0fx2gv Brick, Hard Line Delete W/3/4" Lines, FB 101 FMIC, Pierberg CWA50, Stoptech Drilled/Slotted Rotors, EBC Redstuff, Cut Stock Springs, Flat Bottom Steering Wheel
2006 Black Raven STS-V (Traded In)
Fully Modded: 459RWHP@5888rpm/451lbft@4696rpm
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