Interesting info on E85 and injector sizing
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From: Grand Rapids, MI
Interesting info on E85 and injector sizing
We just did injector testing with 80's in Ryans car from 60's. Something interesting to note. If you have your car currently tuned for 60's on gas and you switch to 80# injectors, it's nearly a perfect tune when you go to E85 WITH NO PCM CHANGES! Woohoo!
If that's not easy, IDK what is.
Just passing along some free info to anyone who's interested.
http://www.zzperformance.com/cobalt_...1051&catid=174
If that's not easy, IDK what is.
Just passing along some free info to anyone who's interested.
http://www.zzperformance.com/cobalt_...1051&catid=174
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From: Boynton Beach, Fl
I remember someone saying something about having to change.. or like coat something... but i might not be recalling it right.
Thats some pretty nifty information... This should be deleted after the first 200 views... then archived somewhere to where you can only search to find it...
Thats some pretty nifty information... This should be deleted after the first 200 views... then archived somewhere to where you can only search to find it...
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From: Boynton Beach, Fl
Originally Posted by Modified Magazine
From our testing with the readily available e85 fuel we now use in our time attack Impreza L. which is about 105 octane, weve found its not quiete as high as knock resistance as the 116 leaded race fuel. This might lead you to think that the car would have to be someone dumbed down, but what ethanol really shines at doing is lowing the cooling charge temp. With ethanol, we were able to go beyond MBT (Minimum best timing, the lowest value of ignition advance that produces the maximum power) without knocking. On the 116 leaded we actually ran out of effective knock prevention prior to reacing MBT, but we were able to go well beyond with e85 illustrating its charge cooling properties.
Does also mention..
"If the car is being used to commute 50 to 60 miles per day and driven hard on the weekends, you have to decide if the power is worth it, given that your engine will consume about 30 percent more e85 getting from point a to point b.
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From: louisville k.y
i dont drive my car that much,i think of the cobalt as just a toy.its a 07 and only got 8200 miles on it.so the gas milage wont bother me a bit . my old nova only got 5 mpg so im all for it.
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I was saying that if you had a setup, like a stage 2 kit or something and you were running 60# injectors as a lot of people are; then you could install 80# injectors and run E85. That would be the ONLY change and you'd be tuned correctly.
Nothing in the car needs to change other than fueling to run E85. Stock pump/lines, etc are just fine.
Downsides are losing 1/4 of your fuel economy and harder to find fuel. Benefits are no KR, safety, a corn smell, lower fuel costs in some area and 5% power gains.
Yes, you read that right. 5% power gain over 93 octane. So a typical stage 2 car in the 240-250 range is going to add 10-15WHP
Nothing in the car needs to change other than fueling to run E85. Stock pump/lines, etc are just fine.
Downsides are losing 1/4 of your fuel economy and harder to find fuel. Benefits are no KR, safety, a corn smell, lower fuel costs in some area and 5% power gains.
Yes, you read that right. 5% power gain over 93 octane. So a typical stage 2 car in the 240-250 range is going to add 10-15WHP
Miles per gallon goes down along with cost per mile.
E-85 = $1.799/g
Premium = $2.79/g
I am going to check you on this.
BRB
E-85 = $1.799/g
Premium = $2.79/g
BRB
Last edited by ebristol; Aug 7, 2009 at 11:22 PM.
I was seeing actual afr readings of 11.9-12.2 on E85.
So just installing the 80# injectors and running E85 will get you very very close.
I still don't know what the optimal E85 fuel readings (calculated to gasoline) are. In my actual E85 tune I am running 11.5 afr just to be safe.
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From: sioux city iowa
I was saying that if you had a setup, like a stage 2 kit or something and you were running 60# injectors as a lot of people are; then you could install 80# injectors and run E85. That would be the ONLY change and you'd be tuned correctly.
Nothing in the car needs to change other than fueling to run E85. Stock pump/lines, etc are just fine.
Downsides are losing 1/4 of your fuel economy and harder to find fuel. Benefits are no KR, safety, a corn smell, lower fuel costs in some area and 5% power gains.
Yes, you read that right. 5% power gain over 93 octane. So a typical stage 2 car in the 240-250 range is going to add 10-15WHP
Nothing in the car needs to change other than fueling to run E85. Stock pump/lines, etc are just fine.
Downsides are losing 1/4 of your fuel economy and harder to find fuel. Benefits are no KR, safety, a corn smell, lower fuel costs in some area and 5% power gains.
Yes, you read that right. 5% power gain over 93 octane. So a typical stage 2 car in the 240-250 range is going to add 10-15WHP
What I think he was saying that if your car is tuned for 60# injectors you can simply install the 80# injectors and switch to E-85 and your car will run fine without needing to change your tune.
Reason being, that the car has to run more fuel with E-85. So the 80# injectors on E-85 work well with the tune from 60# injectors on gasoline.
I found is that it is very close.
