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2013 Chevrolet 2500HD 4x4
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Discussion Starter · #1 ·
I recently bought a 2013 lml that was about 5 hours away and the truck is already deleted and tuned with a 5 pos switch. The guy is not sure who the original tuner was but believes it was tuned with EFI Live. Now he is hard to get a hold of. I am about to do some mods to the truck that I believe I will need new tunes for. My question is can I buy new tunes from another tuner and be able to flash over the existing tunes with their autocal/v2? Is there a way to determine if the current tunes are locked or unlocked? If they are locked, is there any way to remove them other than going to dealership? I think if a dealership flashes back to stock I’ll go into limp mode due to the mods? I need help and suggestions.

I am about to add the below mods:
Air Dog II 4G 165 Lift pump
Exergy Sportsman CP3 conversion kit (WC Fab)
3” MBRP down pipe
LB7 style up pipe
HSP High Flow Bundle Kit
 

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10,697 Posts
You can flash over it.
 
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