loco_GT350
Well-Known Member
- Thread starter
- #1
Okay guys, I have been watching a lot of people run a performance tune (i.e. Lund Racing) on their GT350’s but I am too chicken to do that right now since my car still has 3 years of warranty left on it. Nevertheless I would like to get a little more performance (HP) out of my car.
I have experimented with both a full tank of 100 octane race gas as well as a mixture of 100 octane race gas mixed with 91 octane standard gas which works out to ~94 octane. I have not tested this on a chassis dyno but the butt dyno tells me the car runs stronger in both cases then on standard 91 octane gas. I have run a number of tanks at 94 octane and then went back to 91 and I could tell the car felt a little flat footed compared to when I run on 94.
Given the cost of race fuel in my area is approx $8-$9 a gallon it got me to thinking about playing around with ethanol fuel to try to create an equivalent 94 octane fuel that was cheaper. Here in Arizona where I live there is only one station in town that sells true E85 all the others sell E54 (Arizona government rules mandate ethanol fuel for flex fuel cars be E54, you can about it on the web if you are interested). Anyway I did some analysis and figured out that 5 gallons of E54 mixed with 11 gallons of standard 91 octane fuel creates an equivalent mixture of 94 octane and which works out to be E30 fuel.
I was wondering if anyone else has done this mixture or an equivalent one on a stock tune. Seems to me that this mixture would provide the same benefits of the race fuel mixture but at a lower cost. Since the amount of ethanol is relatively low I would think the air/fuel system and stock tune should be able to handle it and take advantage of the higher octane.
So what do you guys think? Anyone see any flaws, issues, concerns with running E30 fuel? Anyone run a similar type of blend fuel using ethanol on the stock tune?
I have experimented with both a full tank of 100 octane race gas as well as a mixture of 100 octane race gas mixed with 91 octane standard gas which works out to ~94 octane. I have not tested this on a chassis dyno but the butt dyno tells me the car runs stronger in both cases then on standard 91 octane gas. I have run a number of tanks at 94 octane and then went back to 91 and I could tell the car felt a little flat footed compared to when I run on 94.
Given the cost of race fuel in my area is approx $8-$9 a gallon it got me to thinking about playing around with ethanol fuel to try to create an equivalent 94 octane fuel that was cheaper. Here in Arizona where I live there is only one station in town that sells true E85 all the others sell E54 (Arizona government rules mandate ethanol fuel for flex fuel cars be E54, you can about it on the web if you are interested). Anyway I did some analysis and figured out that 5 gallons of E54 mixed with 11 gallons of standard 91 octane fuel creates an equivalent mixture of 94 octane and which works out to be E30 fuel.
I was wondering if anyone else has done this mixture or an equivalent one on a stock tune. Seems to me that this mixture would provide the same benefits of the race fuel mixture but at a lower cost. Since the amount of ethanol is relatively low I would think the air/fuel system and stock tune should be able to handle it and take advantage of the higher octane.
So what do you guys think? Anyone see any flaws, issues, concerns with running E30 fuel? Anyone run a similar type of blend fuel using ethanol on the stock tune?
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