09-19-2008, 07:30 PM
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#11 |
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3" Exhaust
Join Date: Jan 2006
Location: Arizona
Posts: 96
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the highest here in arizona is premium only 91 octane. if i use 89 which is mid grade at first it wasnt knocking i ran like that for a few days but when driving her pretty hard :P ;].... haha.... she started knocking so gave the gas to my brother and wont use 89 anymore.
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