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Old Sep 2, 2014 | 10:11 PM
  #641  
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Originally Posted by oakley6575
If you drive your truck a lot, I would do 91/meth. I just got tired of having to go to the gas station so much since there isn't E85 at every station. Kind of had to plan ahead when driving the truck to make sure I could make it an E85 station. No doubt that E85 is best for high horsepower and drag racing. But I drive my truck to much to want to worry about it.
I'm starting to lean this way. I wanna be able to drive my truck and take it where I need to.
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Old Sep 2, 2014 | 10:18 PM
  #642  
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I'm also getting tired of E85. Not because of availability, but because it seems that I've maxed out the stock 2000 fuel lines. I added a second walbro 450 and I still can't get this thing the fuel it wants over 15 psi. I'm not really interested in putting in aftermarket lines and rails. I'd love to pop off a high 10 as it sits now and then be done with it.
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Old Sep 2, 2014 | 10:37 PM
  #643  
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Originally Posted by GMCtrk
I'm also getting tired of E85. Not because of availability, but because it seems that I've maxed out the stock 2000 fuel lines. I added a second walbro 450 and I still can't get this thing the fuel it wants over 15 psi. I'm not really interested in putting in aftermarket lines and rails. I'd love to pop off a high 10 as it sits now and then be done with it.
Wow. You hit 15 psi on stock lines and rails with e85?
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Old Sep 2, 2014 | 10:59 PM
  #644  
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Originally Posted by Mortiz
Wow. You hit 15 psi on stock lines and rails with e85?
I've seen as high as 17-18 psi in first gear at the track, but at that point my AFR was 8.40 (equivalent to 12.5:1 on gas). With the stock lines and filter, the Walbros are blowing through straws. Obviously it's a very band-aided setup but I want to see how far I can get with it. If I can get an honest 15 psi down the track for the entire run (with my current wastegate spring and eboost settings I was seeing 17-18 psi in 1st and by the time I hit 3rd gear I was at 11 psi) I think I can do some damage. And on my setup, the difference between 11 psi and 15 psi is huge. I converted over to E50 today and I'm temped to try even lower concentrations of ethanol (E35) to see how far I can go with that. But given the high compression of my motor (10.6:1) I'm leery of going to low on the E.
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Old Sep 2, 2014 | 11:48 PM
  #645  
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Originally Posted by GMCtrk
I've seen as high as 17-18 psi in first gear at the track, but at that point my AFR was 8.40 (equivalent to 12.5:1 on gas). With the stock lines and filter, the Walbros are blowing through straws. Obviously it's a very band-aided setup but I want to see how far I can get with it. If I can get an honest 15 psi down the track for the entire run (with my current wastegate spring and eboost settings I was seeing 17-18 psi in 1st and by the time I hit 3rd gear I was at 11 psi) I think I can do some damage. And on my setup, the difference between 11 psi and 15 psi is huge. I converted over to E50 today and I'm temped to try even lower concentrations of ethanol (E35) to see how far I can go with that. But given the high compression of my motor (10.6:1) I'm leery of going to low on the E.
Did you have your wideband set to show in lambda or the ethanol scale of lambda? I believe e85 is happy at the sake lambda that gasoline is, correct?
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Old Sep 3, 2014 | 12:09 AM
  #646  
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Originally Posted by Vortec350ss
Did you have your wideband set to show in lambda or the ethanol scale of lambda? I believe e85 is happy at the sake lambda that gasoline is, correct?
Lambda is lambda.... Its not a scale and there aren't more than one lambdas. Everything you said in that statement doesn't make sense. Lambda 1.00 is stoich for EVERY fuel out there.
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Old Sep 3, 2014 | 01:47 PM
  #647  
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I just have an alcohol sensor so it does not matter if its 10% or 85%. Not much to it. You will need the volume covered on a big hp build though.
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Old Sep 3, 2014 | 02:01 PM
  #648  
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Lambda is current afr divided by stoich afr.
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Old Sep 4, 2014 | 12:56 PM
  #649  
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7-8psi off launch, how are you going to prevent the tire from at the track or anytime from a dig? Can you dump the pedal or have to ease into it?
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Old Sep 4, 2014 | 12:58 PM
  #650  
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Oh and a video would make my day haha
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