Anyone running e85? On ram?

[Caamanoram]

Im looking into doing some bolt on upgrades, intake, headers, exhaust, and wanting to convert to e85, will the stock fuel system keep up? Can the fuel flex work in stock ecu ? Has anyone tried this? Lol tia!

 

[RedSRT4Me]

Im looking into doing some bolt on upgrades, intake, headers, exhaust, and wanting to convert to e85, will the stock fuel system keep up? Can the fuel flex work in stock ecu ? Has anyone tried this? Lol tia!

I have done it using a Jay Greene Custom E51 tune with Diablo I3 programmer.

I was assured the stock system could handle basic bolt-ons with this tune.

Mopar CAI
aFe Longtube headers
4.56 gears
Lifted 7" on 35's
Carven Exhaust

 

[Caamanoram]

I have done it using a Jay Greene Custom E51 tune with Diablo I3 programmer.

I was assured the stock system could handle basic bolt-ons with this tune.

Mopar CAI
aFe Longtube headers
4.56 gears
Lifted 7" on 35's
Carven Exhaust

Sweet man what numbers u get like hp tq? Btw i like your set up

 

[RedSRT4Me]

Sweet man what numbers u get like hp tq? Btw i like your set up

Unfortunately I didn't do Dyno testing.

When I started running it no one was interested in it simply because of the misinformation about ethanol.

I bought the tune to compliment the 91 tune. I'll switch back to it later on when I get back to tinkering.

I encourage if you decide to run E51 or greater ethanol report back your experience and mods. It will obviously love boost but gas mileage suffered 2-3 mpg

 

[Caamanoram]

Unfortunately I didn't do Dyno testing.

When I started running it no one was interested in it simply because of the misinformation about ethanol.

I bought the tune to compliment the 91 tune. I'll switch back to it later on when I get back to tinkering.

I encourage if you decide to run E51 or greater ethanol report back your experience and mods. It will obviously love boost but gas mileage suffered 2-3 mpg

Unfortunately I didn't do Dyno testing.

When I started running it no one was interested in it simply because of the misinformation about ethanol.

I bought the tune to compliment the 91 tune. I'll switch back to it later on when I get back to tinkering.

I encourage if you decide to run E51 or greater ethanol report back your experience and mods. It will obviously love boost but gas mileage suffered 2-3 mpg

Just finish a build on a honda s2000 turbo 600hp mid boost for now

But im thinking of getting some nitto tires for my truck, intake, headers, exhaust and cams, doing a e85 convert. With perhaps 75 shot of nitrius lol ill prolly start after the summer tho .

 

[tidefan1967]

Technically no Hemi is setup to run E85 from the factory and only E10 is recommended for 2015 and older vehicles with E15 being acceptable for 2016 and newer. Whether this is a tuning issue or a maybe the fuel system is not setup to handle it or both I don't know.

 

[RedSRT4Me]

Technically no Hemi is setup to run E85 from the factory and only E10 is recommended for 2015 and older vehicles with E15 being acceptable for 2016 and newer. Whether this is a tuning issue or a maybe the fuel system is not setup to handle it or both I don't know.

It would be a tuning issue. The stock PCM doesn't have an alcohol/ethanol sensor to adjust timing appropriately on the fly for Ram.

You want to get as much regular gas out so you can fill it up with flex fuel (E51) or E85 etc. Then install your tune that should advance the ignition timing to increase power. Nothing huge maybe 10hp at most (mods will vary this number). If you're NA this might be one of the last mods to do to squeeze every last drop out of your Hemi.

I did it because I was bored and I like to pick Jay's brain from time to time learning everything I can on the in's and out's of the 4th gen.

 

[quietpeen]

if the same info transfers from the srt 392 hemi, if you live in regions where it gets colder you will most likely have to switch to larger injectors

 

[tidefan1967]

E85 here used to be like .50 less per gallon than E10 87 but something changed somewhere along the way and now it actually cost a little bit more. I can get E15 88 for five cents a gallon less than regular at a couple of gas stations. I know on the current model Silverado‘s with a 5.3 L V8 if you run straight E 85 it’s worth like an extra 28 hp and about the same or a little bit more torque extra. Of course the Silverado’s have an extra MAP for E85 whereas the HEMI doesn’t.

 

[prohunter4]

E85 is drying up. The subsidies for growing corn to produce aren’t what they use to be and completely disappear in 2022. It was a joke to begin with.

 

[LeesEvoX]

E85 is drying up. The subsidies for growing corn to produce aren’t what they use to be and completely disappear in 2022. It was a joke to begin with.

This better not be true... I love the E85 power bump in my evo lol.

The stock systems can take ethanol. The main concern with ethanol is that older fuel lines were not compatible. But nowadays, with ethanol in our pump gas. All the lines are made to handle it.

Now I'm sure OP will know since he is building a 600hp S2000. But it takes a lot more ethanol to get the combustion you need. So eventually you will run out of fuel pump and injector. Hence why my evo has a walbro 450 pump in the stock gas tank, then a custom surge tank in the trunk, to an external aeromotive fuel pump.. which is massive. And to finish, running 2000cc injectors (On a ******* 4 banger lolol)

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[Casper]

Im looking into doing some bolt on upgrades, intake, headers, exhaust, and wanting to convert to e85, will the stock fuel system keep up? Can the fuel flex work in stock ecu ? Has anyone tried this? Lol tia!

E-10 and E-15 are one thing. E-85 is mostly corrosive alcohol. It entrains water (literally sucks moister out of the air until it achieves saturation), and can flash to vapor, causing vapor lock under pressure in high ambient/op temps.
Yes, the pros run ethanol, but a stock, or even modified stock engine is not purpose built for ethanol.
BTUs are awful as well.
So you'll burning twice as much fuel for less mileage.
But if its just ragging down the road, and you can afford the tear down and rebuilds, go for it......
If the 5.7L were going to predictably achieve its full estimated service life on E-85, don't you think FCA would have claimed it for greenie weenie points with Uncle Sugar?

To my knowledge only the 4.7L is certified to run on E-85.

 

[Tim Garceau]

Get your bolt-ons done first before worrying about combustion mods, there are much more effective methods for controlling detonation and pre-ignition than corn-gas in boosted or high comp applications.

Coming from a little four/six popper rice burner that makes power in a small window myself in a previous life, you're going to find labor and horsepower/component mods extremely different.

 

[ram1500rsm]

Is not only a matter of timing but also fuel correction. The PCM is calibrated for regular gas stoich at 14.53 (14 RAM 1500, maybe is different in newer year, should be 14.7 but manufacturers are doing this is accomodate e10, which should be around 14.1 stoich), then fuel trims are in place to correct up to +-25% of whatver stoich value is defined in the PCM, this is assuming you have no fuel sensor like in our case. past 25% you get the usual too lean or too rich DTC's.

I've done e85 tuning in the GM side for L76/LS3 engines, but i don't know how the model works that well in the Hemi side, GM have the pump and injectors stock to handle e85 at least on the factory cam.

Tuning for this stuff without a sensor is not complicated but you'll want to have fuel tester handy, and something you you can use to change the factory stoich value in the calibration (Hptuners or similar), adjust the value according to the alchohol content in the gas. If you have no tester, then you can start at 9.75 stoich, and use your fuel trims to arrive at the right value so the trims are close to 0%

I have no idea if the Hemi fuel pump will be big enough to run e85 or if the injectors are big enough for the task (WOT fuel). with GM you can simply look at a PID called Injector Duty Cycle, and as long as you're not exceeding 90% at WOT you're peachy, i haven't looked in our PCM to see if the PID is there or not.

Asides form that you also want to play with your cranking airflow at cold ECT temps.

Then add some timing to your WOT fuel and that's it.

I ran e85 in my G8 and Camaro for around 2 years each, never had any issues with it and all the BS you read in the internet forums and how your hoses will explode and corrode your entire car. if you never ran this stuff before you have no idea what you're talking about, leave that BS for CNN and MSNBC.

 

[prohunter4]

My Dad and I own a large farm in south Ga. We are surrounded by other farmers as well. It is kinda a known fact in the farming community that the ethanol subsidies are on their way out. We use to have several gas stations that sold E85 where we are stationed now. Left for 3 years, came back now there are 0. Closest one is an hour away. Cheaper to buy race gas.

 

[LeesEvoX]

My Dad and I own a large farm in south Ga. We are surrounded by other farmers as well. It is kinda a known fact in the farming community that the ethanol subsidies are on their way out. We use to have several gas stations that sold E85 where we are stationed now. Left for 3 years, came back now there are 0. Closest one is an hour away. Cheaper to buy race gas.

Damn. We have new E85 pumps popping up everywhere outside Houston. I used to have 0. Now I have 4 lol.

And at less than $1.80 I'd love to hear of a cheaper race gas!

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[Marine Les]

I don't understand why anyone would want to run E85, what am I missing?

 

[LeesEvoX]

I don't understand why anyone would want to run E85, what am I missing?

It makes more power than pump gas because of a higher resistance to knock. So you can advance timing more.

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[ram1500rsm]

I don't understand why anyone would want to run E85, what am I missing?

108 octane for cheap, here in SoCal e85 is $2.85/gallon
100 octane at the pump is about $10-$11/gallon
My 10 Silverado is flex fuel ready so I can pump e85 in any combination and I don’t have to do crap. I do it to keep the top end clean and back when gas was almost $5 couple of years ago e85 was still cheap.
It makes no sense on a stock vehicle, but if you have some long tubes + cam is cheap power, and/or if you’re pumping NOS or have FI is also cheap insurance and more power.

 

[Caamanoram]

Technically no Hemi is setup to run E85 from the factory and only E10 is recommended for 2015 and older vehicles with E15 being acceptable for 2016 and newer. Whether this is a tuning issue or a maybe the fuel system is not setup to handle it or both I don't know.

What do u mean technically a hemi isnt set up to run e85? Chevy, ford motors and honda run on e85, u have to changr out to bigger injectors and fuel pump, and get a special tune, is that what you're referring to? Or hemi simply cant be modified to run e85? I run e85 on my s2000 aem v2 with fuel flex sensor. Fuel flex sensor lets you use pump or e85, it wouldnt matter how much u use of each, it can be mixed