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Gas octane question?

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Old Sep 17, 2005 | 11:56 AM
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HemiRam9
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Default Gas octane question?

I just got the new 04-05 tuner from Superchips for my Hemi and have a question about octane. In the manual it says under performance setting use 91 octane well down here in Houston all I see is 87 89 and 93. I wonder are they talking about mid grade gas or super unleaded? I already use 89 that is what dodge calls for I just never seen a 91 hopefully there not talking about super unleaded then I will really be broke.
 
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Old Sep 17, 2005 | 12:14 PM
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Default RE: Gas octane question?

ORIGINAL: HemiRam9

I just got the new 04-05 tuner from Superchips for my Hemi and have a question about octane. In the manual it says under performance setting use 91 octane well down here in Houston all I see is 87 89 and 93. I wonder are they talking about mid grade gas or super unleaded? I already use 89 that is what dodge calls for I just never seen a 91 hopefully there not talking about super unleaded then I will really be broke.
91=premium. So if you want to use the recommended buy 93. As for going broke becuase you have to now use it, well remove the cjip! To fill up with the next higher grade is only 2.60 if empty.
 
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Old Sep 18, 2005 | 11:03 AM
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Default RE: Gas octane question?

Do the math, 10 gallons of 89 oct. and 10 gallons of 93 equal 91 oct. 89 +93 =180 / by 2=91 oct.
 
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Old Sep 19, 2005 | 04:32 PM
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Default RE: Gas octane question?

Consider, too, that a fuel looses some octane when it's been underground. I was told that by the time you get 93 octane at the pump, it's closer to 91...
 
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