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I have a 99 with a hypertech installed,, My service colum lock come on and I have to have towed to dealer , I,m pretty sure they will re-flash my computer, my question is do I have to remove hypertech program before, or if I get car back can I just plug in hypertech and reprogrm, or will I lose the whole program and have a usless controller,car is going to be towed to dealer Monday, and I,m not that close to it so I need to know asap
 

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Black 08, A&A TI supercharger. Kooks headers. CCW wheels. Much more
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When they flash,you will lose your tune....
Not sure how the handhelds are,but i would load the stock program back into the PCM,then let them re-flash it,then when you leave the dealer,load your hypertech back in.Or sell it and get a vinci handheld (if your set on a handheld),or get a ls1 edit tune done.
Out of curiosity,can you adjust a/f,timing with the hypertech?You can with a vinci,and the idle too,as well as the trany etc..
 
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