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#1
08-21-2005, 12:43 PM
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WOW..if I could get 98 octane I would be excited....
Engines are designed around a specific octane level. Thus an engine that requires 98 octane will run worse and can possibly detonate early on a lower octane fuel. Higher octanes are essential for FI vehicles because of the increased air flow and heat. You'll see with many Turbo cars that detonation is a HUGE problem (causing the piston to hit the valve).
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An unwavering defender of those I see worth protecting. "promote the general welfare, not provide the general welfare" We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defence, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America. 
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#2
08-21-2005, 02:54 PM
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possibly 2 reasons.. 1) they're ignorant 2) the camp of reasoning that your DME can only advance the timing so much.
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#3
08-21-2005, 04:17 PM
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Quote:
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admin @ mbworld.org
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#4
08-22-2005, 03:15 AM
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30 yrs ago.... OK, over 30 yrs ago, we used 110 octane aviation fuel in the Navy propeller planes. higher octane prevents premature detonation (pinging) - used to see Ferrari,Cobra, and other exotic car owners gassing up at the local airport in NJ - engine temperature was measured at the cylinder with the least cooling effect - was taught 180 deg was ideal
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Mark         _______________________________2001 X5 4.4i topaz blue/sand Sport, complete Dinan S2  , hitch, V1, tint, BSW Stage 1, Alpine INA-W910BT___________ Life is not fair! You can't protect people from their own stupidity! Laughter makes life worth living
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