E85 Tune
01-09-2010, 09:19 AM
#3
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80# injectors
3 255 pumps with a custom alum. hat and lower piece. (stock fuel gauge still works)
fast rails
aeromotive 1:1 fpr
stock feed line
evap line for return
16* timing
618/695 on a bone stock ls6,ls1 heads,t76, and 12 psi.
oh, its a bitch to start when its cold. I put 10 gallons of e85 in and 2 gallons of shell 91.
3 255 pumps with a custom alum. hat and lower piece. (stock fuel gauge still works)
fast rails
aeromotive 1:1 fpr
stock feed line
evap line for return
16* timing
618/695 on a bone stock ls6,ls1 heads,t76, and 12 psi.
oh, its a bitch to start when its cold. I put 10 gallons of e85 in and 2 gallons of shell 91.
01-09-2010, 09:41 AM
#4
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I tryed it without a tune, and at first it ran a little choppy, but after a while it ran great. The throttle response was better, but I needed to fill up after only 180 some miles.
01-09-2010, 05:21 PM
#5
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I am gonna try it. I have a 04 GTO also. I think all you really need to get is bigger injectors and a tune. E85 has a richer stoich and takes 25-35% more fuel. I have a OTRCAI, LTs w/o the kitty and a exhaust and I can easily hit 85% on the injectors at 58-60 psi @wot. It really depends on what you want to do. But everyone says that is is a PITA when it's cold.
01-09-2010, 07:15 PM
#6
You will need bigger injectors for sure.
My 120# injectors were 84% duty cycle on my last dyno pull (#'s and vid in sig)
so make sure how much power you are looking for before buying anything.
Use the RC engineering calculator in the stickies with a bsfc of .88 and you will get an accurate idea of what injector to use.
You will need a good tuner to help you get it dialed in.
BTW mine fires right up and idles nice at 25*F with a 238/242 cam and a belt driven fuel pump.
It's all in the tune....
Jim
My 120# injectors were 84% duty cycle on my last dyno pull (#'s and vid in sig)
so make sure how much power you are looking for before buying anything.
Use the RC engineering calculator in the stickies with a bsfc of .88 and you will get an accurate idea of what injector to use.
You will need a good tuner to help you get it dialed in.
BTW mine fires right up and idles nice at 25*F with a 238/242 cam and a belt driven fuel pump.
It's all in the tune....
Jim
