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Downsides of E85

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Old Jul 18, 2008 | 10:27 AM
  #16  
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Originally Posted by Smogrunner
Isn't one downside that E85 has more cold start problems, especially in very cold weather?
Smoggy, isn't cold weather for you mean if it goes below 70 degrees?
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Old Jul 18, 2008 | 06:51 PM
  #17  
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Downsides (varying degrees of importance):
- Availability
- Blend changes in Winter (no problem in CA, but definitely a problem in CO)
- Unknown long-term affect on fuel system, but not likely to be an issue
- Have to fill up more often
- Cold start issues

I can't think of others, and none of these bother me. I keep a 5-gal fuel jug with me most of the time - full if on a long drive and when I go to the track, but empty otherwise.
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Old Jul 22, 2008 | 11:36 PM
  #18  
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Warrtalon - you use a conserverate tune since you have such different winter blends?
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Old Jul 25, 2008 | 09:23 PM
  #19  
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I have just started thinking about doing the conversion and am a bit worried about the variance in winter and summer blends in CO since I go to college there winter through spring. If I have a conservetave tune for E85 will that take care of E70 with no problem? Also, does anyone know if any stations in cali will sell 55 gal drums of e85?
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Old Jul 25, 2008 | 09:27 PM
  #20  
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the car that i just set up for e85 only lost 3-4 mpg
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Old Jul 26, 2008 | 02:22 PM
  #21  
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Originally Posted by whitenblue65
I ... am a bit worried about the variance in winter and summer blends...
So am I. Refer to numbers 9, 10 and 11 here.

I think any E85 station will sell you enough E85 to fill up your 55 gal drum. Should hold about 55 gal.

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Old Jul 26, 2008 | 05:48 PM
  #22  
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RRE brought an empty 55 gallon drum to the Los Angeles station to fillup for a girl who ran the Redline Time Attack last weekend. They even hauled the drum to the track for her. Damn, if i was as cute as her, they'd probably do it for me too.
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Old Jul 27, 2008 | 05:29 PM
  #23  
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From: Hoffman Estates and DeKalb, Illinois
Illinois has some pretty varying changes to it's ethanol content in E85 throughout the year. So the best idea is to get a conserverate tune on lower than max boost and keep my CEL as a knocksum indication just in case it gets extremely low?
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Old Jul 27, 2008 | 05:42 PM
  #24  
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i would say the lower mph/gal
Cold start issues /i think gas stations sell a mix: 90% ethanol-10% gas, and still have issues/
availability

thats all for me.
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Old Jul 28, 2008 | 10:05 PM
  #25  
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From: Long Island, NY
Originally Posted by ohthree
Warrtalon - you use a conserverate tune since you have such different winter blends?
Nah, just a 2nd map. I don't run E-85 to be conservative. That goes against the whole purpose of running E-85, imo. I just have to pay attention as Fall rolls around by watching my gauges and logs to know when to switch. However, the plan is to try and find a place that can guarantee 85% through the winter.
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Old Jul 28, 2008 | 10:11 PM
  #26  
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Originally Posted by Warrtalon
Nah, just a 2nd map. I don't run E-85 to be conservative. That goes against the whole purpose of running E-85, imo. I just have to pay attention as Fall rolls around by watching my gauges and logs to know when to switch. However, the plan is to try and find a place that can guarantee 85% through the winter.
Off Topic: Briargate is guaranteed 85% having spoken with the owner.

-E
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Old Jul 28, 2008 | 10:39 PM
  #27  
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I am thinking about making the switch too, there are now 3 pumps within 5 miles of me so I am considering it. I would like to know more from you guys that have done tunes before.

My cars current setup it a Stock bottom end, Built head, ARP head studs, cams, spring, lifter, etc.. JMF intake manifold. Buschur Cast manifold with GT35R turbo strait through turbo back exhaust (no cat), Greddy FMIC and piping, upgraded fuel pump and 850cc injectors. With AEM EMS. It put down 448 whp and 389 tq on pump gas. I would like to know what size injectors I should up grade too and if I should also do a bigger fuel pump. Like the bucschur double pumper? and what boost should I run with this setup? thanks in advance.
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Old Jul 28, 2008 | 11:22 PM
  #28  
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Originally Posted by JohnBradley
No downsides other than you use 30% more of it cruising, and becuase it makes the car more fun probably more than that.

Pros-

Car runs cooler

Engine is more knock resistant

Makes more power over pumpgas

Smells cool

Cons-

Makes the car too much fun
What he Said. This is why I am making this the next mod. Plus I love the smell
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Old Jul 29, 2008 | 05:35 AM
  #29  
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Originally Posted by Evolution IVGSR
I would like to know what size injectors I should up grade to and if I should also do a bigger fuel pump
If you are doing OK now on 850cc, then your should do fine on 1,200cc with E85 and twin pumps.

Originally Posted by Evolution IVGSR
and what boost should I run with this setup?
What ever boost you consider to be the the maximum efficiency level of your turbo.

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Old Jul 29, 2008 | 11:52 PM
  #30  
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From: Utah, SLC
Originally Posted by Jim in Tucson
If you are doing OK now on 850cc, then your should do fine on 1,200cc with E85 and twin pumps.



What ever boost you consider to be the the maximum efficiency level of your turbo.

Thanks I had people telling me that I had to go 1600cc injectors for sure but I didnt think that i would have to go that big. 1200's sound much better to me. thanks.
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