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ok i'm not really clear on this
if i get a 2nd ecu and put a tune on that one after i do my mods(LT,exhaust,CAI)
then put the stock one back in come warranty time will they be able to tell, i know they can tell if a computer has ever been messed with if they dig,and then they send that into GM then your screwed unless your service manager is cool with it
but since i wont be ever touching the stock one will there be a problem?
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