E85 in a gen3

[Sparda1123]

For you folks running E85, what are you seeing for average mpg?

I can't stay out of the power so like 10 sometimes 9 of constant high rpm, anti lag etc.

If I drive like a normal civilized person best I saw before I ruined it by stepping on it was 14 or so. I actually get better highway mileage driving 80+mph than I used to.

 

[catinthehat85]

I only have injectors. You may want to double check your information. There was a revision with the gen 3 HPFP (among other things) which is why you see guys doing just injectors.

Simple search: https://www.fordraptorforum.com/threads/e-85-requirements.100535/#post-1975321

Is there a difference between Gen 2 and Gen 3 motor?

I thought I read somewhere that the Gen 3 motor, although rated for the same for torque and horsepower, was retuned to deliver the torque at lower rpm's. Is this true? If so would it explain an improvement in mileage (about 1.5-2 mpg) in favor of my Gen 3 over my Gen 2? Are there any other...

www.fordraptorforum.com

Reason I asked this question is because I literally know someone on an e85 tune with upgraded fuel pump and stock injectors.

 

[Sparda1123]

Reason I asked this question is because I literally know someone on an e85 tune with upgraded fuel pump and stock injectors.

Not sure what to tell you man. The gen 3 guys I know running it all have just injectors. But not discrediting what that dude has but you asked if you "need" it to run e85 and the answer is no. My Truck ran up to e95 (One Ethanol R) on no other fuel mod than the ID1050X with still having fuel left over. The limit we hit was turbos. Just can't get anymore air in their to make more power on the factory turbos.

 

[catinthehat85]

Not sure what to tell you man. The gen 3 guys I know running it all have just injectors. But not discrediting what that dude has but you asked if you "need" it to run e85 and the answer is no. My Truck ran up to e95 (One Ethanol R) on no other fuel mod than the ID1050X with still having fuel left over. The limit we hit was turbos. Just can't get anymore air in their to make more power on the factory turbos.

Thanks no worries at all. His is a gen 2 which doesn't have as strong a fuel pump. For my gen 3, if all e85 took was a fuel pump that takes 20 min to install I would do it. Injectors is another story. I'll settle with e50 for now =)

 

[Burt]

Is that the stuff that turns spark plugs orange?

I don't know about it turning spark plus orange and I am guessing from your comment that that's a bad thing?
I don't know much about it, I did run it in my Demon to get the octane up for the full 840 hp but that was after watching/following other Demon owners use it without any issues.

 

[slimmytimmy]

My mileage is so great running e-85 that I keep 1,000 gallons handy for long weekends

 

[Sparda1123]

I don't know about it turning spark plus orange and I am guessing from your comment that that's a bad thing?
I don't know much about it, I did run it in my Demon to get the octane up for the full 840 hp but that was after watching/following other Demon owners use it without any issues.

The chemical that causes this which is prevalent in most octane boosters that actually work is MMT. This is a synthetic lead substitute and has similar downsides of lead in that it leaves deposits in your combustion chamber, spark plugs, o2 sensors and cats. Does it work? Yes. Are their drawbacks? Also yes. No free lunch. Also, your manual explicitly states not to use it. There's pretty extensive information out there on the topic. Some dudes had failures, some dudes say they've never had an issue, but the question is how often did they use it? Do you want to play the game in treating the above mentioned components as consumables? Etc.

The TLDR is If you want octane, the cheapest way is ethanol. You want octane higher than ethanol, the cheapest way is just buying unleaded race gas from one of the many companies out there. Boostane will work up to a certain point where it becomes diminishing returns. Proceed accordingly.

 

[slimmytimmy]

The chemical that causes this which is prevalent in most octane boosters that actually work is MMT. This is a synthetic lead substitute and has similar downsides of lead in that it leaves deposits in your combustion chamber, spark plugs, o2 sensors and cats. Does it work? Yes. Are their drawbacks? Also yes. No free lunch. Also, your manual explicitly states not to use it. There's pretty extensive information out there on the topic. Some dudes had failures, some dudes say they've never had an issue, but the question is how often did they use it? Do you want to play the game in treating the above mentioned components as consumables? Etc.

The TLDR is If you want octane, the cheapest way is ethanol. You want octane higher than ethanol, the cheapest way is just buying unleaded race gas from one of the many companies out there. Boostane will work up to a certain point where it becomes diminishing returns. Proceed accordingly.

I have used E-85 to E-98 in different vehicles for years. Some were flex fuel from the factory and others were modified with aftermarket components to safely use it. Never a single problem with corroded fuel lines, pump failures, clogged injectors, watered down fuel from condensation in vehicles not driven very often, honestly no problems that I can attribute to ethanol. I do perform preventative maintenance earlier than recommended by manufacturers. The only motors I don’t run it in are my boats, and obviously my diesels. My turbo jet skis love it. For real though, I do keep a minimum of a thousand gallons on of e-85 and about 100 gallons of e-98 on hand at all times.