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Old 05-18-2011, 01:50 PM   #5
CXTKRS1
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Join Date: Jul 2009
Location: Louisiana
Name: Chris
Age: 38
Posts: 637
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Originally Posted by THEHMONGYAJ87 View Post
Yeah, because my old gsr with a 10.1 comp ratio requires premium only.
Your GSR was also an older engine. 87 octane is all that is needed in the xD, anything else you are not seeing any gains and just wasting money.
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