This is the kind of information I'm looking for. Practical first hand experence with tuning. I'm not interested in the eco part, or saving money part, I'm interested in the power part. Several Grand Prix guys are going this with very impressive results. I would like to give thsi a shot. But will most likely have 2 seperate tunes. This is not a every day fuel, but a track fuel and tune.

There are many GP guys etc that have successfully modded and retuned to use E85. The results are very impressive. Might be better than a FFV because the tune is specific for the fuel and not sense'd by the PCM and then the tune is changed

The reason I mentioned what I did about E85 is to question its long term availability. I don't know if it would be worth it to invest the money and time to run and tune for E85 for track days if alternate fuels are becoming available. Honda for example already has a hydrogen car out, and in California there are hydrogen fill-up stations at Shell gas stations. Just a thought, that'* all.

I incourage thought, that'* why I posted it. But I think the reason for this was lost. Not looking for daily fuel. At the track we already run a different tune. So this is not much more work. But with xylene at $10 a gallon, mixing race gas comes out to about $7 a gallon.

A lot of info about just using it as racing fuel making itz way around the 'net Dan, Here'* one, short read/great info

http://raceone85.com/


"Basic" E85 Tuning Tips:
1. No matter what type of fuel system you are running you must increase flow (volume) by roughly 30% over a (gas) setup. This is more than just increasing the main jets (in a carburetor) by 30%. Flow must be increased throughout the whole system and fuel curve.
2. Start out with your total timing the same as on gas then adjust for best mph.
3. Water temp. needs to be 140 - 150 degrees when you pull into the water box and at least 160 degrees when you stage. Your jetting is close when you gain about 10 degrees in the 1/8th and about 20 degrees in the quarter.
4. If you have the luxury of tuning with a wide band air/fuel ratio meter we have found that it is very easy to use the lambda scale. We tune for 1 at idle and .82 to .83 @ WOT for best (safe) power. If you use an EGT meter to tune with you know that ideal temps. will vary greatly from one combination to another. It has been our finding that if you keep it below 1500 degrees while you are sorting out your tune up you don't have to worry about hurting anything in the process. We have found that most naturally aspirated combinations end up making best power between 1150 and 1250 degrees on E85. Forced induction applications usually run 100 to 200 degrees hotter.
5. E85 has a high resistance to knock but lights off easy so it is susceptible to pre-ignition. A non protruding tip plug is recommended. Autolite Racing plugs with the cut back strap work well for us. We run AR-133 with the blower, this is a little cooler then you would need for natural aspiration. When reading your plugs look for them to be real clean with a little tan color down inside the threads on the porcelain. If no color appears after the first couple of runs, jet up until some starts to show then adjust jetting for best mph from there. Here is a helpful cross reference chart. http://www.autolite.com/pdf/RacingCrossRef.pdf

I agree venom,its just more money out of everyones pocket with little to no gain to the consumer,i think e85 will be fazed out after a few more years,ive only ever seen 1 e 85 station and its been out for how many years now?

I'm kinda familiar with it but on the 700 yamaha raptor quads. You will need a adjustible fuel pressure regulator to fine tune the flow, bigger fuel pump, not sure about the injectors, you should be able to sneak by depending on your current mods. Higher octane fuel burns colder believe it or not. So your plugs I take it are colder already? Most older model fuel pumps won't handle E85 and will lock up. You may need to retro fit a fuel pump off a flex fuel vehicle. Seriously its more of a headache then what it is worth. Your losing mileage and spending alot of money to gain what? I understand octane points. I understand the benefits of it being cheaper, but after a while you will understand where I come from, from my stand point. You can just go to the air port and if your not running a cat, buy the avaiation fuel for less and just mix it. Tests were also ran on 104+ maximium to prove that also raises octane points. There'* very few boosters that actually work out there. Find a few guys who know quads and they will help you. Those above are my opinions. What you do is up to you. But I do see pro'* and con'* but more of the con'*. Yes the E85 is cheaper, but to what extent are you wanting to go and stuff? The E85 isn't regulated as well as the premium gas. So until the day comes that it is, I won't touch it. I saw a raptor get 30 mpg and it was heavily modded also had a jokers vault turbo kit, and then he refueled for the same trip with E85, and got 35 mpg. Same type of riding. I guess to much ethanol in a batch. It was gassed up at 2 different gas stations to.
later
craig

Sorry about that guys, it only showed the 1st post on page 1, I'm getting a bad lage, especially when doing a full reply.

Read this. http://whitelightning.net/

I was going to do this to my chevy colorado but traded it in for the GXP

2000 if he pulls a cat, he will develop a problem when the O2 dies.