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The defacto guide to tuning your car for e85.

SgtMarshal said:
One thing I didn't see in this sticky is which injectors to use for E85 with a turbo. I have 42's already but the turbo is going on within the next few months and don't want to buy the wrong ones.
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80s minimum, and you'll need a pump to keep up.
 




SgtMarshal said:
One thing I didn't see in this sticky is which injectors to use for E85 with a turbo. I have 42's already but the turbo is going on within the next few months and don't want to buy the wrong ones.
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42s are probably a tad small for turbo unless you have very low power goals. 60lb injectors can take you to 500 and beyond on e85.
 
"Change it to 1.25 for all 6 cylinders if your tuning for winter blend E85 or 1.3 for summer blend. If you want you can shoot for the middle at 1.225"

The middle would be 1.275, not 1.225, right?

Also in DHP this is called "Injector Skew Percent" but there is also "Rough Idle Injector Skew Percent" would that possibly be needing changed too?
 


charlieRobinson said:
Who here is running sub 2.8" pulleys on E85? What valve train mods do you have?
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Rockers, intercooler, stock cam....

WOT is ~.88 lambda and have run up to 21* of timing with that too but I usually stick around the 18* area. If its cooler Ill crank it up a little while Im driving around for ****s and giggles.
 
I sh!t canned the turbo idea and am running a 40% blend of E85 mixed with 91. I have been running this blend for a few weeks now. I have the maf adjusted, and am running an 11.5 afr at wot. so far the only change I have done is to the maf table. I'm thinking about raising the blend to 50% ethanol. should I stick with the 11.5 afr, or can I go richer to benefit from the cooling of ethanol? also, what would I change in the tune for the 50% blend? I keep the car parked in the garage and I haven't had much of a starting issue, except when the car is warmed up. it has been like this for several years. the car starts every time, but when it's warmed up, I have to give it gas to start. it is totally unrelated to running the 40% blend of ethanol.
 


I bought a few gas cans worth of e85 because the pump with e85 is a couple hours away. so I just bring the gas can with me when I fill my tank.
 
Do you have a pickup? You should buy one of those in bed fuel tanks that looks like a tool box, and fill that up with e85.
 
More fuel isn't going to help you, going richer is the opposite of what I would want to do with E85.

E85 is great at taking away heat, you should be able to lean the mixture out a little bit using E85.
 
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