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just installed sct tuner

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Posted by: o3sonicbluexlt

i put the perf. file 1 and the shift firmness at 1. at 4k rpms, i hear a knocking from the motor. is there a way that i can get this to go away as it is annoying?

Posted by: Frogman

Yeah. dynotune.

It sounds like the motor is detonating at those Revs.

Posted by: 2001LS8Sport

Stop putting the car into detonation immediately! First, make sure you are running a high quality premium fuel. If you are now, then you aren't going to be able to run that tune. You might need to get a custom tune from someone like Torrie and have them work with you.

Posted by: Quik LS

+1 - go back to stock tune and make sure you are running 93+ octane.

Then work with your tuner - they can adjust the tune.

Posted by: o3sonicbluexlt

i got it from torrie. ill have to give him a call