Thread: Is my PCM tuned? How to tell?

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  1. #1 Re: Is my PCM tuned? How to tell? 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Normally "tuned" "canned" PCM's will have a name on it, like ZZP, overkill, Digital horsepower etc etc.

    If its been tuned via a DHP tuner or HP Tuners there is no way to tell. You'd have to ask the owner before you.

    White GTX might be what GM and SLP put on the PCM when it left the factory.

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  2. #2 Re: Is my PCM tuned? How to tell? 
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    Are there any performance aspects i could look for that only a tuned PCM would do. IE a Fan temp turn on? SHift points? 40 mph WOT lag? I know at 40 I can punch it and the tranny drops to second gear and its balls to the wall. How bad is the lag usually on stock tuning?
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