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Just ordered XR...best octane?...thinking 104, any gains over that?

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Old 10-26-2004, 09:40 AM
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Just ordered XR...best octane?...thinking 104, any gains over that?
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Old 10-26-2004, 09:41 AM
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Whats the difference between Gaic X and XR?
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Old 10-26-2004, 09:47 AM
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30hp...race chip... :- )
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Old 10-26-2004, 09:47 AM
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X = pump gas (91/93); XR = race gas (100/104)
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Old 10-26-2004, 09:53 AM
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So you can only have XR if you always have race gas in your car?
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Old 10-26-2004, 09:54 AM
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Yes, unless you want to knock your engine to death...
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Old 10-26-2004, 09:58 AM
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Default Some people on here run XR on 94....
apparently they run great when properly tuned.
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Old 10-26-2004, 09:58 AM
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Default I have XR in my car ALL THE TIME...
93/94 octane is no problem. The secret is in the low IAT's that big compressor wheels and intercoolers provide.

Oh, and I don't pull any timing. I add timing when I run 100 octane though.
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Old 10-26-2004, 10:00 AM
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You don't count, you're special. Mr. K16. :-P
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Old 10-26-2004, 10:03 AM
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Woot! New status: "Madman approved specialness"
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