Race Gas (Wow)
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Staging Lane
Joined: Feb 2004
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Race Gas (Wow) I live in El Paso. Gas is cheap on average. 91 octane and you have to change your fuel filter it seems like when you change your oil. I got my hands on 3 gallons of some stuff called electron blue(116 octane) it comes out blue. All I can say is wow what a difference. I never thought it could make that much of a difference. I did not notice that much when I got long tube headers. Only noticed this much when I got the cam. Well, I almost want to spend the money to see if there is a difference on the dyno. Anyway, I was happy for once with my ride and thought I would share. 
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From: Columbus, OH
Hrmmm, the way I always understood it, using an octane higher than you need reduces your power. I think that's because it takes more energy to burn (which is why it's used to prevent detonation...). What was the difference it made? Smoother? Also I'd be careful to make sure that it doesn't have any lead in it if you plan on using it on a regular basis... Lead does some nasty things to O2 sensors.
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From: Las Cruces, NM
Originally Posted by MurrayFormula
I live in El Paso. Gas is cheap on average. 91 octane and you have to change your fuel filter it seems like when you change your oil. I got my hands on 3 gallons of some stuff called electron blue(116 octane) it comes out blue. All I can say is wow what a difference. I never thought it could make that much of a difference. I did not notice that much when I got long tube headers. Only noticed this much when I got the cam. Well, I almost want to spend the money to see if there is a difference on the dyno. Anyway, I was happy for once with my ride and thought I would share.
Gary
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From: Columbus, OH
Originally Posted by NoseUpChromeDown
Though it takes a tad more energy to burn, when it burns it BURNS. It makes a much more powerful explosion which can definitely be felt at the seat and seen on a dyno.
Oh, and, yeah, watch the lead with the cats and 02's. They won't last long...
Oh, and, yeah, watch the lead with the cats and 02's. They won't last long...
Thread Starter
Staging Lane
Joined: Feb 2004
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I do not know the difference except in the seat. My car is cammed and I have not been able to run except when it is hot and with the 91. So last night when it was 60 something and I got a quarter of a tank of race gas I could tell a difference. My car doesn't run smooth with the regular fuel at all, but it runs with this stuff. I do not have any sensors or cats and the gas has very little lead in it.
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From: Columbus, OH
Originally Posted by MurrayFormula
I do not know the difference except in the seat. My car is cammed and I have not been able to run except when it is hot and with the 91. So last night when it was 60 something and I got a quarter of a tank of race gas I could tell a difference. My car doesn't run smooth with the regular fuel at all, but it runs with this stuff. I do not have any sensors or cats and the gas has very little lead in it.
Launching!
Joined: Jul 2004
Posts: 273
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From: HighDesert California
the higher the octane the longer it takes to burn to prevent a too early of detonation.. it does not require "energy", its the fact that higher compression engines (like ours) creates hotter combustion temps. also, like mentioned, lead is very toxic for O2 sensors..
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Joined: Sep 2002
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From: Redondo Beach, CA
Yeah, there are several 76 Unocal stations that sell 101 Unleaded at the pump. One right by where I live and one right by my work. At 5.50 a gallon, it's a bit expensive but it may become a necessary evil if I want to use boost....
Originally Posted by LT1Burnout
the higher the octane the longer it takes to burn to prevent a too early of detonation.. it does not require "energy", its the fact that higher compression engines (like ours) creates hotter combustion temps. also, like mentioned, lead is very toxic for O2 sensors..
It will kill the O2s VERY fast. If you have o2s dont **** with the leaded stuff.
Bad o2s = improper readings to the PCM. My car was running at 14.5 AFR when I ran leaded fuel n killed the O2s.
No O2s No Cats No problem
Brad
On The Tree
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From: San Rafael, CA
Octane, is the resistance of the fuel to ignite/burn. The reason this is good on high hp/forced induction cars, is because you can run more timing withough the chance of pre ignitining the mixture or compression igniting it, or often times forced induction causes the plug electrodes to get so hot that the mixture is ignited too early. In this case again higher octane will have a tendency to stay less volitile. As far as burning hotter thats not true. More air makes the burn hotter. On a fairly stock car with no power adder, i doubt it would make any difference in hp at all, unless you were getting knock or running some timing.