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Old 05-18-2013, 12:14 PM   #59
kk3an's Avatar
Joined: Jul 2009
Location: Somerset, PA
Oddometer: 84
I also had a very pronounced detonation / pre-detonation issue caused by throttle blips with my '13 GSA.

Removed the exhaust flap and the problem went away 100%. No throttle body sync, no nothing - just replaced the exhaust flap with a straight section of pipe and the issue was gone.

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