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Old July 29th, 2014, 08:34 PM   #1
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Cool E85 Tuning

Now that we have Flash Pro, wouldn't we be able to tune for e85? We would have to change close loop fuel, open loop fuel, larger injectors (410's available and I have). Only concern would be the fuel pump being able to keep up with the 30% increase of fuel.

Anyone do this, attempted or know someone who has on our cars?
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Old July 29th, 2014, 08:56 PM   #2
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Do it!!
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Old July 29th, 2014, 09:16 PM   #3
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kill the build in fuel pressure regulator
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Old July 30th, 2014, 06:33 AM   #4
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I've been planning for this as well, im on regular injectors though on my j36 build by Paul Smalser, willing to upgrade and do this kind of tune. Definitely would keep her another 2 years to see how things go, would like to know the insight of pro mechanics on this subject.
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Old July 30th, 2014, 08:12 AM   #5
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E85 is a great method to make power. I've been talking to my buddy with the RSX about it, because he uses it. He obviously has larger injectors and a Fuel Pump as well & he gained 6-7whp/tq throughout the RPM range.

410cc are the minimum we should be running for E85. 270cc x 1.30 (30% more) ~ 350. However, even that would be 85% duty cycle so I'm not sure how that would effect anything. All I know is, one of my datalogs showed me in the mid 80s in terms of duty cycle, and I think it was as much as 88% at one point. I will have to double check.
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Old July 30th, 2014, 08:18 AM   #6
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E85 Tuning

The beauty about the rdx injectors is that they can be tweaked/pushed to 700+cc's...real worry is that pump replacement
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Old July 30th, 2014, 09:52 AM   #7
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^ Exactly what I was thinking. I've seen someone either on here or AZ drop in a High output Fuel Pump.
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Old July 30th, 2014, 10:20 AM   #8
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How much did it run him
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Old July 30th, 2014, 10:48 AM   #9
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^ no clue, I want to say the user on here, I think Invisblduck
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Old July 30th, 2014, 03:33 PM   #10
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meh, There are better options, depending on your location of course, like race gas versus E85. I'm not talking about C16 and the leaded stuff.

If you can find Shell URT Advanced locally -- check into using that fuel. Add it to your tank when your going to the track, change to your race fuel MAP and viola, more HP.


I know you guys are talking about running E85 full time with it being readily available at pump stations. However, if your all motor, I really see no reason to spend all that money upgrading your fuel system to E85 when you can spend that same amount of money over a greater period of time and get the same, if not better, results from race gas. Again, it depends on your location and what is readily available.


If your boosted, then I guess that is another story....
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Old July 30th, 2014, 03:39 PM   #11
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^ with Flash pro we can have as many calibrations as we want, currently I have 8 saved down but only use 2 of them.. I wouldn't run E85 full time, when I did I would simply upload the map at the gas station.

I do hear what your saying though. If people are doing this for fuel economy, they should probably stop reading this thread. Race Fuel is a easy option as is octane booster, water meth and Nitrous. I would pick all of those over E85, lol.

Not sure why I started this thread now. LMAO
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Old July 30th, 2014, 03:55 PM   #12
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Cuz that's what we do! Haha still a good thread
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Old July 30th, 2014, 04:47 PM   #13
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I also have a high output fuel pump. The aeromotive stealth 340. Paul modified the original fuel pump assembly to fit it then just made a new outlet port to run SS line from the assembly to the pressure regulator in the engine bay. He used to the factory feed line as the return line. It works fine, the only problem is the pick up seems to be a little higher in the tank than factory so I'm "empty" sooner...like just as the fuel light comes on.
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Old July 30th, 2014, 06:50 PM   #14
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This would be awesome . I talked to paul about this a while ago and im pretty sure gotta do a overhaul of new lines to run e85 reliably. I may be wrong though its been a while since we discussed.

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Old July 30th, 2014, 06:51 PM   #15
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No need to change fuel lines, only injectors and pump.
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Old July 30th, 2014, 09:02 PM   #16
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Larger diameter pipe = more flow
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Old July 30th, 2014, 11:50 PM   #17
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crazy build
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Old August 5th, 2014, 03:41 PM   #18
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So who is gonna make the leap of faith for e85....
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Old August 5th, 2014, 03:56 PM   #19
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Already took a leap, but not to e85
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Old August 6th, 2014, 02:21 PM   #20
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E85 pump sucks and inconsistent. If you're going to tune on it make sure you buy a
E85 tester to know the actual content. Otherwise buy it from a race fuel supplier.

I only run race fuel
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Old August 6th, 2014, 02:28 PM   #21
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or drop some money and buy a 55 gallon drum of e98 or e100. A couple local guys are talking about it around me.
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Old August 6th, 2014, 02:28 PM   #22
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E85 pump sucks and inconsistent. If you're going to tune on it make sure you buy a
E85 tester to know the actual content. Otherwise buy it from a race fuel supplier.

I only run race fuel
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Old August 21st, 2014, 12:37 AM   #23
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im going e85 hell yeah i just need my injectors
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Old August 21st, 2014, 01:12 AM   #24
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Quote:
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No need to change fuel lines, only injectors and pump.

thats right only fuel pump and injectors i have a walbro 255 fuel pump, a aereomotive fuel pressure regulator and a aeromotive fuel filter to do this we need hondata idk with aem this can b done
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Old August 21st, 2014, 11:44 AM   #25
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I don't see the ROI on E85 in an NA application. For FI though, hands down. Yes you'll use more fuel, but the cost differential between race gas and E85 combined with the cooling benefits of E, it's a winner for an FI motor. I'll be running E once I turbo.
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Old August 21st, 2014, 01:00 PM   #26
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I don't see the ROI on E85 in an NA application. For FI though, hands down. Yes you'll use more fuel, but the cost differential between race gas and E85 combined with the cooling benefits of E, it's a winner for an FI motor. I'll be running E once I turbo.
The K series guys run it and make another 6-8whp/tq throughout the powerband on bolt on motors. High compression builds may make even more. It may be counterproductive to drive daily on E85, but for racing purposes I think it makes sense. For the addition of RDX injectors and a fuel pump (~$400 total) for 6-8whp/tq seems pretty good for our motors. Who knows, maybe our motor will like E85 more
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Old August 21st, 2014, 02:07 PM   #27
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The K series guys run it and make another 6-8whp/tq throughout the powerband on bolt on motors. High compression builds may make even more. It may be counterproductive to drive daily on E85, but for racing purposes I think it makes sense. For the addition of RDX injectors and a fuel pump (~$400 total) for 6-8whp/tq seems pretty good for our motors. Who knows, maybe our motor will like E85 more

my past daily was a e85 car. My hatch went from stock GSR JRSC, to bolton GSR, to GSR with T3 6262. I was still getting good gas mileage. Hell i drove from PA to NC on e85. E85 at the time was around a $1 cheaper than 93 octane. Now its about the same price as 87 which depending where you go is anywhere from 40-60 cents less than 93.

Side note the 2012+ SI guys found out that the DW65c fuel pump from Deatschwerks is a direct fit replacement for the oem pump. Apparently it also works on the 06+ Civics too. This would be a good thing if it works for us also. Stock lines, drop in bigger fuel pump, and bigger injectors all with the stock fpr.

DIY - 2012+ SI Deatschwerks fuel pump install | 9th Generation Honda Civic Forum
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Old February 28th, 2017, 12:20 PM   #28
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Well, I'm back to contemplating this.
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Old February 28th, 2017, 04:56 PM   #29
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do it!!
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Old March 1st, 2017, 06:22 AM   #30
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E85 pump was added to a sheetz 1.6 miles from my house.

Are you running a return style fuel setup?
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