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Old 04/30/2012, 11:02 AM   #26
ialuder
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Default Re: running e85

i have never had an issue. hell my car sat over a year with a full tank of e85. got back from army shit and started right up and ran harder than it did before i put it on jack stands. i have never seen my afr below 11. i use the phill kum n go to.


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Old 04/30/2012, 11:11 AM   #27
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Default Re: running e85

Quick question. I kinda looked into this just want to confirm. 550cc while running e85 are not good for over 275hp

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Old 04/30/2012, 11:36 AM   #28
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Default Re: running e85

Quote:
Originally Posted by crxh22honda View Post
Quick question. I kinda looked into this just want to confirm. 550cc while running e85 are not good for over 275hp
That would be pushing it IMO. You might be able to cheat by adding more fuel pressure. I used to run a RC750cc injector, now I'm running the ID1000.


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Old 04/30/2012, 12:08 PM   #29
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Default Re: running e85

Yikes. Is it really that much benefits? It seems like alot of hassle. Or at least that's how you guys have made it sound. With cleaning the injectors every season. Watching ur afr. Tuning sounds like a big hassle. Are we really talking about only a 5hp gain. An does it really just destroy rubber lines. It doesn't sound very cost efficient.

Last edited by crxh22honda; 04/30/2012 at 12:39 PM.
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Old 04/30/2012, 12:23 PM   #30
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Default Re: running e85

I didnt say you HAD to clean them every season, I was just saying thats what I do.


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Old 04/30/2012, 03:49 PM   #31
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Default Re: running e85

Bobby, I was watching my AFR's because this was my first winter of the car sitting with E85 in it, and I figured when I filled it up last in early December, that I got a batch of lower blend E70 in it. Since my AFR's never dipped, it actually probably had the same blend in it that it had when it was tuned. I bought a tester this winter to monitor my fills from here on out.

I left my injectors in the car with E85 in the rail all winter. I removed them and sent them to PTE for cleaning and testing. Less than a 1% change in flow from the cleaning. What I will do this winter is pull them out, dry them out with some dessicant (little baggies of drying agent that come with new shoes) and store them in a bag with that. That will take care of any moisture issues.

Tuning for WOT is basically the same. And if the car is equipped with a IACV, idle and startup should be pretty easy. There is just some issues with colder weather, that gas compensation is higher values than E85 compensation. That is all able to be changed in the tune. Now, if you tune your car on pump gas (91 octane around here) on your higher compression ratio, you will not make as much power as you will on E85. E85 will perform like race gas for around 1/3-1/4 of the price. It will allow for more timing because it has a higher detonation threshold. It also cools the intake charge and burns cooler, not working your cooling system as hard. You would see optimum power at all times using E85. Not so if you would have a pump gas/race gas tune.

Your 550's will be cutting it close, and none of the 550cc injectors really like a higher pressure on the seat to optimize spray patterns. I would go to a ID 725/850/1000 unit. Their spray patterns are second to none and they work with pretty much any fuel pressure.

As far as the rubber lines go, I am still on my stock fuel feed and return line. Also, the inside of any form of braided hose is a rubber composite. I have not had any chunking or hardening issues.

Last edited by H22APWRD94; 04/30/2012 at 03:52 PM.
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Old 04/30/2012, 04:28 PM   #32
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Default Re: running e85

Very interesting. It just leaves me to wonder how low or high the gains Would be. I know no ones can really say but does leave me wondering. Just to slam the product I bought a little bit. I called BisiMoto an told them I wanted to run e85 an asked what size injectors I should get for around 270-290hp they said 550cc. Found out a little later I should have got a little bigger. My mistake tho not checking it out more.


How can you tell if higher pressure would be ok?








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Old 04/30/2012, 11:42 PM   #33
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Default Re: running e85

our 410cc injectors are nearly at 90% at 240whp .... 93octane...
next month we're switching to E85 with some 1100cc injectors just because the price difference wasn't that far off from 800cc


if your shooting for +270whp... get some 780cc injectors or something like that.
I've never liked the idea of running injectors at more than 80% injector duty cycle....

i'm not the smartest person but that's just me.
Kind of like overworking something beyond it's effiency range is not a ideal i.e. turbo, injectors, valve springs, rod bots, clutch...
... never leads to anything good.


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Old 05/01/2012, 08:43 AM   #34
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Default Re: running e85

Quote:
Originally Posted by crxh22honda View Post
Very interesting. It just leaves me to wonder how low or high the gains Would be. I know no ones can really say but does leave me wondering. Just to slam the product I bought a little bit. I called BisiMoto an told them I wanted to run e85 an asked what size injectors I should get for around 270-290hp they said 550cc. Found out a little later I should have got a little bigger. My mistake tho not checking it out more.


How can you tell if higher pressure would be ok?
The higher pressure will be limited by the pump. A lot of the turbo guys are running anywhere from 50-100psi base pressure. But this is also with more than your everyday Walbro 255. Those things fall on their face around 70psi. What you have to look at is the pumps flow capabilities at a certain pressure. More pressure at the injector makes them capable of larger flow amounts. So borderline on a 550cc injector at 43.5psi (3bar, or basically OEM pressure) may not be borderline at 60psi base fuel pressure. But you never want to run your fuel system on the ragged edge. It is better to have built in head room for safety.

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Old 05/01/2012, 09:24 AM   #35
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Default Re: running e85

yea, i did the cheap thing got a walbro when they were on sale on ht. now i need to upgrade badly. i got the 1600cc injectors that tad was running on his mr2 for really cheap. however my stock fuel lines and small 255 pump are limiting my build.


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Old 05/01/2012, 10:29 AM   #36
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Default Re: running e85

Thanks guys. Another awesome thread

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