I Tuned a friends GSR motor that he built specifically for E85, everything was stock except he put 12.5:1 pistons in it to take advantage of the fuel.. It made right at 180HP.. This is with EVERYTHING stock but the pistons, even the exhaust manifold was stock GSR... I didn't have to add hardly any timing over 92 octane, it was very simular timing wise, and it didn't really like to run leaner under load i've heard some people say that E85 does, but not in my EXP, but at part throttle we were getting away with 15.5 A/F ratios, with no problems.. hes getting about 28-32 MPG depending on how he drives it..

I also had another friend that made almost right at 600HP in a turbo RSX with 11.5:1 compression on e85 almost maxing out his 1600CC injectors.. he went on to make over 800 on race gas.

Also another friend of mine just recently made 307HP on a built N/A K24 TYPE S setup.. Its not daily driven so I couldn't tell you the gas mileage..

 

sorry to beat a daed horse but on a stock honda fuel system you can just start pumping e85 into your tank? NO mods needed(besided a tune?) Might look into that e85 is like 2.50 here premium is 3.59

 

E85 has done me well, I probably filled out 100 petitions online to request the stuff in my area, about 7 months later I had a pump 30 sec from my front door. The only thing that I am really doing different is changing the oil more often as it smells really tainted with the alcohol and it takes some extra cranks to start in the cold, but other than that the stuff is the truth.

Sleeved Stock Bore/Stroke GSR 8.5:1
Mild Ported Head, GSR Cams, Ferrea Valvetrain
OEM Ignition w/ MSD Wires
T67HO BB @ 20 & 23psi E85
3" DP/Ex

 

what injectors were you using?

 

Very good flowing RC 1000's (they made 10 more whp on my friends 2.0 LSV on E85)
x2 255hp's and -8 Feed

It was lean at this boost, I left at about 1.4bar to be safe

 

interesting reading... makes me want to consider getting an e85 tune as a base and a race gas tune for serious play.

curious of what people are doing about some places supplimenting in winter blend (e70) at stations were they get e85. curious of what people are doing about some places supplimenting in winter blend (e70) at stations were they get e85. are you just careful about checking (which can be difficult because they dont post that they changed alot of times locally here) or ?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by twkdCD595 &raquo;</TD></TR><TR><TD CLASS="quote">

curious of what people are doing about some places supplimenting in winter blend (e70) at stations were they get e85. are you just careful about checking (which can be difficult because they dont post that they changed alot of times locally here) or ?</TD></TR></TABLE>

I must be one of the lucky ones, my station stocks E85 year round, it arrives as E98 and is cut with 93 right out of the pump.

 

just curious... are you sure they are not adjusting the mixture during winter months? i thought all e85 stations do it as like a standard to aid in cold starts during that time of the year.

I do not drive my car during winter, but for the sake of discussion say there is nice day here like is has been randomly this year but technically still winter/ cold time of year. Just curious if I would be basically **** out of luck if they were pumping e70.

 

If you had a GM flex fuel sensor and had a company build a LCD board you could have a display that shows your current ethanol content and adjust your tune accordingly. I am sure some of the OEM based Honda ECU Companys (Hondata, Neptune eCtune etc) are looking into flex fuel options in their programs, its only a matter of time.

 

i guess the easiest alternative to something like that now is just to ask and hope that they have a clue about what your talking about at the station where you get e85.

or watch your a/f's right after a fill up to make sure it consistant mix with your tune.

 

was just thinking right off the top..

i had 680s and i have 1000s now thats about 30% size increase so i should be able to fire up the car on e85 from pump gas right. its rich on pump right now so it should be ok to drive her on the trailer

 

how much hp can the stock fuel lines support if you run e85?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by twkdCD595 &raquo;</TD></TR><TR><TD CLASS="quote">i guess the easiest alternative to something like that now is just to ask and hope that they have a clue about what your talking about at the station where you get e85.

or watch your a/f's right after a fill up to make sure it consistant mix with your tune.</TD></TR></TABLE>

Exactly. I always run a wideband and bring my laptop along when I fill up.

My local station says they don't change the blend during the winter, so we'll see when April comes around.

 

The place I talked to (finally a close E85 station last fall) told me outright they were using E70 for winter, and E85 for summer. THe lady was actually very nice about it. I never asked when they'll change over, since it FINALLY got above 45F today. Our average HIGH in Feb was lower than the avg LOW...


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 96 GSR-T &raquo;</TD></TR><TR><TD CLASS="quote">If you had a GM flex fuel sensor and had a company build a LCD board you could have a display that shows your current ethanol content and adjust your tune accordingly. I am sure some of the OEM based Honda ECU Companys (Hondata, Neptune eCtune etc) are looking into flex fuel options in their programs, its only a matter of time.</TD></TR></TABLE>

I recall one of the Evo websites actually offering this (I thought it was listed in one of these threads), it was something like $2-300, and the sensors went for $1-200. The problem is the new style sensor is like $350, and GM D/C'd the old one. The prob with integrating it into an OBD1 ecu is that it was some weird PWM output, not normal voltage. Thats why the hardware costs what it does, not just since it was made in Romania or something.

I plan on doing it the old-fasioned way. CromePro, tune with a tank of E70, tune with a tank of E85, then make a few maps in between with my 16-possition chip/switcher.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by patrick4588 &raquo;</TD></TR><TR><TD CLASS="quote">how much hp can the stock fuel lines support if you run e85?</TD></TR></TABLE>

 

No experience, but I would def look into upgrading them around 500whp or so. I am sure more can be made with the stockers but I wouldnt push it.

 

i plan to upgrade my lines over the summer when i get a bigger turbo, but i wanted to see if i could put 475whp or so on the stock lines with a walbro 255

 

most people upgrade around 500hp or so on gas, so I think you'll have to go up to -8.

 

i was planning on -8 feed and -6 return. i wanted to make about 650whp on the turbo, then spray a 150 shot at the track on top of that. now im thinkin i may need -10 feed...

 

i changed mine at 300whp just for piece of mind. banjo fitting flow like a very tight ***.
-6 is what im running it should be good for my goals. but -8 should be more than adequate for that power. my bud runs 2 -6 from his -10 and hes making over 500whp on boost and then going to spray 250. he hasnt had any fuel pressure or delivery problems.

 

look what I just found.......



apparently they use a higher octane gas for the cutting, which bumps its octane to 112, I looked on the site but could not find the fuel on there though.

 

Thats badass. I wonder how the price compares to other race fuels. I'd totally rock that fuel for track days.

 

at what power level does the single 255lph pump become inadequate ?
1k cc / 255lph pump / stock everything else, fuel wise.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by zex_cool &raquo;</TD></TR><TR><TD CLASS="quote">at what power level does the single 255lph pump become inadequate ?
1k cc / 255lph pump / stock everything else, fuel wise. </TD></TR></TABLE>

exactly what i wanted to know too!!!

 

Around 500-550whp on my dyno depending on base fuel pressure and if a injector driver box is being used. I tend to run base fuel pressures in the 50-60 range if 1000cc and a single walbro is being used to get as much as possible out of the combination. The dual walbros get a bit more out of it, but not much. 1600cc's run surprisingly well with e85 with only a resistor box. I have gotten 650whp out of a single walbro and 1600cc's on my dyno, but the walbros just dont hold high fuel pressure well and duals are needed if you want more than that power level. A walbro 255lph HP feeding a Bosch 044 is an excellent choice with 1600cc's if you are trying put alot of power. I would imagine that combination would support 750-800whp with a high base fuel pressure.