If you don't mind me asking, why are you going back to stock? Are you going back with the stock tune as well?
If you don't mind me asking, why are you going back to stock? Are you going back with the stock tune as well?
04 SC Sierra 5.3L- 40 series Flowmaster w/ 3.73's and limited slip from the factory, 2/4 drop & 20's--- Nelson 93 Octane Tune
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