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Tbh, if your tuner doesnt know how that the tcm needs t be sent out to hp tuners to be unlocked, you need a new tuner. They do not know anything about these computers, and they are very different from previous GM motors. You are going to be their guinea pig.
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2016 1SS A8: FBO + Circle D + P1X + Meth + Tuned by Pray Performance
Stock Longblock
800 SAE rwhp. 9.4 @ 145 mph.
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