2004 GXP Octane preference
09-17-2008, 06:51 PM
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2004 GXP Octane preference
I read the manual and it said 87 is OK to use but for better performance to run higher octane.
Has anyone really noticed a difference between 87 and 93 octane?
Has anyone really noticed a difference between 87 and 93 octane?
09-18-2008, 09:18 AM
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yes there is a difference...i only use 93 but then again i have my timing bumped up a few degrees...regardless i have only used 93 from the beginning. and the cost at the pump is only like 3 bucks more total.
i found these helpful as well:
Octane rating - Wikipedia, the free encyclopedia <--what octane really is/means
ZZ Performance <-what knock is
SuperchargersOnline.com :: Detonation, Knock, and Pre-Ignition 101
i found these helpful as well:
Octane rating - Wikipedia, the free encyclopedia <--what octane really is/means
ZZ Performance <-what knock is
SuperchargersOnline.com :: Detonation, Knock, and Pre-Ignition 101
09-18-2008, 09:52 PM
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yes there is a difference...i only use 93 but then again i have my timing bumped up a few degrees...regardless i have only used 93 from the beginning. and the cost at the pump is only like 3 bucks more total.
i found these helpful as well:
Octane rating - Wikipedia, the free encyclopedia <--what octane really is/means
ZZ Performance <-what knock is
SuperchargersOnline.com :: Detonation, Knock, and Pre-Ignition 101
i found these helpful as well:
Octane rating - Wikipedia, the free encyclopedia <--what octane really is/means
ZZ Performance <-what knock is
SuperchargersOnline.com :: Detonation, Knock, and Pre-Ignition 101
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