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Does anyone know a good tuner in the eastern Pennsylvania area (or NJ)? After installing an LS6 intake and ported throttle body on an LS1 I have a surging issue.
might want to double check if you have any vacuum leaks or if you have your pcv lines all correctly lined up first. also are you still using the MAF screen?
Did you remove the plastic clips on the knock sensors wires under the intake? Hold your new ported TB up to a light, can you see a lot of light coming around the TB blade?