Land of chad
Newbie
Are there any plug and play performance chips for a 1993 gmc sierra c1500 that actually work and are worth the buy? Or are they all a scam?
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I tried them on a 1989 and 1994 454 trucks and no luck. Maybe someone liked them on the 350's?Are there any plug and play performance chips for a 1993 gmc sierra c1500 that actually work and are worth the buy? Or are they all a scam?