Originally Posted by underpsi68

I'm not sure what hose is made that is coast guard approved. I have to look again what hose I'm running(street car). It's the black nylon an hose. I do get some smell in the garage, not terrible, but it is there. IMO a lot of incorrect info about e85, usually from people that never ran it. Not sure why e85 mileage would go to crap in the winter? It should actually be better than summer (in general) because it will probably be e70, more btu's per gallon. I had my car out in 0-5* air temps. If the a/f is to rich, I've had misfires (10.8:1 on very low boost). I did have to add a degree or 2 in the very cold start coolant temp table to help it light off easier in very cold temps. Fantastic, yes there are a lot of misconseptions, not liking the cold is apparently one of them .

You don't want to skimp on the fuel system. How much hp are you looking to go? What injectors are you running? I wanna turn it down to 900-950hp , my original thoughts were to keep cylinder pressure and detonation down but with E85, extra cooling and octane maybe a bit more.
(10) 100lbs injectors in the back of the blower, another 8 in the runners (42lbs/hr)

I made just shy of 1100rwhp and my 220lb injectors were at 85% duty cycle. Fp was just starting to drop on my last 30psi pull. I'm running a Bosch 044 pump full time and I have a weldon 2035 pump with a boost a pump on it turned on at 1psi. On the dyno I had the boost a pump turned down/ off. After the last pump I raised the pump to get the flow higher. I'm running-10 feed/-8 return. All my lines are -10an return included.

Pump e85 is about the same price per mpg as premium, by me. Comparing it price wise to race gas isn't even close.

I only had one issue with the e85. The one time I didn't run alcohol lube, I removed the engine and the injectors were sitting for about a year. 6 were stuck closed when I went to start it. They were able to be freed without buying new$1800 injectors, thank God lol.

I never had any issue with moisture/ water in the fuel. My car would sit for months at a time during the winter/ bad weather. I would just turn the key and go. Never worried about old/stale fuel. You shouldn't run paper filters. Run stainless mesh. I ordered these , probably a paper filter but can be replaced with mesh
https://www.cpperformance.com/p-7430...d-bracket.aspx



They go down to 10 micron and lower now. Not sure what mpg or gpm you do will burn. As a rough rule every 10% ethanol will be a 3-4% difference in fuel burn. Will going from e50 to e70/85 make that big of a mileage difference where you won't make it home?
I have smaller tanks, 60 gallons each. Shouldn`t be an issue for most weekends and if i`m on a longer run i can just fill up with 91..
How is tuning when it comes to a flex sensor of do you just have a E85 tune?

Originally Posted by underpsi68

That filter/ water separator could work. I would run it and see how it does. How much hp will you be making? I know a lot of ecu's do a linear fuel percentage adjustment for flex fuel. Haltech is one, not sure about the holley. You could start with that in the table. That should get you pretty close. I run my ecu in open loop, so I try to get mine dialed in. A few years back I started with pump and slowly added e85 to get a base tune. I got it close than called it a day. I run it on e85 100% of the time as it is easy to get where I live. Just wanted to have the ability to run anything if I needed to.

Originally Posted by GPM

In my opinion, it's only worth running E85 in a high compression or boosted application. The price difference between it and racing gas even burning an extra 35 to 40 percent still seems worth it.

Originally Posted by Craney

Does AV gas have lead in it?

Originally Posted by DRAG

I run a GM flex sensor in my street car with 40% ethanol and I like the fuel, I like the sensor, I like how the ecu manages my timing and boost if I can’t get ethanol or get the mix wrong. I think filling at 2 pumps to get the mix is completely annoying.