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Bonneville GXP/ Northstar Powered Cars Discuss your Bonneville GXP and/or any other Northstar powered Olds or Cadillac... Including the 3.5L Twin Cam V6 (Short Star ) 4.0L and 4.6L Northstar V8's. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Premium vs. Regular

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Old Aug 25, 2005 | 12:42 PM
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Originally Posted by Buzz38
Originally Posted by LakevilleSSEi
It'* not knock that causes anything with the higher octane running slower, it'* the fact that the higher octane itself burns slower (if I remember correctly)
Knock is the reason for running higher octane fuel. No knock = no need for higher octane. When the knock sensor sees knock ( I use the term knock to cover Pre-ignition and detonation) the PCM pulls timing to save the motor. If it sees no knock the PCM advances timing to set parameters which gives you more power. I saw no difference in power or economy in the two tanks of premium fuel we ran and our car hit 140 once on low grade so a dog it wasn't.
DING DING!

so the only difference in power you would have is timing not being pulled
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Old Aug 25, 2005 | 05:12 PM
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I am just glad my SLE runs on 87!
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Old Aug 25, 2005 | 06:08 PM
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Originally Posted by LakevilleSSEi
By the sounds of how you drive on a daily basis.......You'll have that car wrapped around a tree in no time.
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Old Aug 25, 2005 | 08:01 PM
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Originally Posted by SSsuperchargedEi
Originally Posted by LakevilleSSEi
By the sounds of how you drive on a daily basis.......You'll have that car wrapped around a tree in no time.
LMAO
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Old Aug 25, 2005 | 08:16 PM
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Originally Posted by Buzz38
Originally Posted by LakevilleSSEi
It'* not knock that causes anything with the higher octane running slower, it'* the fact that the higher octane itself burns slower (if I remember correctly)
Knock is the reason for running higher octane fuel. No knock = no need for higher octane. When the knock sensor sees knock ( I use the term knock to cover Pre-ignition and detonation) the PCM pulls timing to save the motor. If it sees no knock the PCM advances timing to set parameters which gives you more power. I saw no difference in power or economy in the two tanks of premium fuel we ran and our car hit 140 once on low grade so a dog it wasn't.
I understand that, everyone'* thinking that the higher octane even if you don't need it gives you power
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Old Aug 25, 2005 | 08:35 PM
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Originally Posted by auroradude
Blah i am looking at a Camaro Z28 droptop and several T/As...when i get 1 of them can smoke a lot of ppl here hehe.
keep thinking that
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Old Aug 25, 2005 | 08:38 PM
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Originally Posted by 1993 SLE
Originally Posted by auroradude
Blah i am looking at a Camaro Z28 droptop and several T/As...when i get 1 of them can smoke a lot of ppl here hehe.
keep thinking that
And back on topic we go children.
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Old Aug 28, 2005 | 02:58 AM
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Originally Posted by LakevilleSSEi
Originally Posted by auroradude
Blah i am looking at a Camaro Z28 droptop and several T/As...when i get 1 of them can smoke a lot of ppl here hehe.

Nah we'll still beat you....By the sounds of how you drive on a daily basis.......You'll have that car wrapped around a tree in no time.

nah....i drive my friends TA all the time. Its got 380rwhp. we usually swap cars for a day or 2 because he has no A/C and i dont use it.
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Old Aug 28, 2005 | 09:49 AM
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newsflash we could care less about your friends' 9000000 hp ta
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Old Aug 28, 2005 | 12:47 PM
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Auroura Douche.....Back on Topic or don't post at all????? Got it????

Ryan.....You know.
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