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i am useing 93 octane gas and i have been useing 93 for 4 weeks now and i makes my car ping like it is advanceing my timming to far does anyone have any idea wut that is from or wut i do to prevent it.
 

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I've heard of detonation from using crappy gas (mine doesn't like 87 in the higher RPM's) but never on using too high octane...
 
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