Ok, rather than bump an old thread, I figured I'd just start a new one... Has there been any progress on running E85? Particularly, has anyone worked on using E85 ethanol to hold HOM with stage 3?
Now that the warm weather is back I'm thinking of swapping in some bigger injectors and giving it a shot.
I think I've determined that I have no hope of holding HOM with my stock S3 injectors because they regularly seem to hit 95% duty cycle on gas... Although, perhaps with the fuel pump rewire mod I could bring that down some.
Well... it is definitely possible, though the major problem would be getting the larger injectors. My personal opinion is that our "ethanol research money" should be better placed in a fuel source that is FAR more viable instead of destroying the prices worth wide for corn... though I do digress! I actually have a company up here in Canada that makes ethanol from anything that is celulose based... but still... I don't think this is a viable solution...
But if you want to do it... slap on some huge injectors.... upgrade your fuel system and have at 'er.... your seals might suffer as ethanol eats at them a little more... but nothing horrible....
Well... it is definitely possible, though the major problem would be getting the larger injectors. My personal opinion is that our "ethanol research money" should be better placed in a fuel source that is FAR more viable instead of destroying the prices worth wide for corn... though I do digress! I actually have a company up here in Canada that makes ethanol from anything that is celulose based... but still... I don't think this is a viable solution...
But if you want to do it... slap on some huge injectors.... upgrade your fuel system and have at 'er.... your seals might suffer as ethanol eats at them a little more... but nothing horrible....
Yes, yes. Know all about it. Read the nature paper, etc... I don't think anyone should be using ethanol for plain old transportation fuel, but it is a great, cheap version of race gas.
I can get basically any size injector that I want that will be plug and play. The question is, how much to ramp up over S3 injectors? And, is it possible to find an optimal size where the PCM will trim out fuel on gas and put it in on e85 such that it stays within the allowable range...
well put it this way, I would go at least 30%, more like 30-40%, then if you need something to tune it with you wont be worried that timing is added b/c you have the octane for it. You just have to remember that you need more pump or keep the pressure lower
Yes, yes. Know all about it. Read the nature paper, etc... I don't think anyone should be using ethanol for plain old transportation fuel, but it is a great, cheap version of race gas.
I can get basically any size injector that I want that will be plug and play. The question is, how much to ramp up over S3 injectors? And, is it possible to find an optimal size where the PCM will trim out fuel on gas and put it in on e85 such that it stays within the allowable range...
if your injectors are running 95% on prem. than you will have to get FRL or bigger injectors b/c to tune E85 right you need to add 30% mmore fuel.
Yeah, I've heard somewhere in the range of 20% - 30% more... Maybe less, though, since S3 runs so rich to begin with...
I'm going to try the fuel pump rewire mod to see if that bumps down my duty cycles... then some bigger injectors....
ill tell you how it goes for me tonight, im going to try to tune it w/ stock pcm and stg2 injectors w/ dtec. ive been using a conversion kit but tonight i will take it off and tune it and see what happens.
hmm.... interesting. I'm interesting in seeing if it can be done without having to tune if the injectors are sized properly.... But, I guess that might be unavoidable...
hmm.... interesting. I'm interesting in seeing if it can be done without having to tune if the injectors are sized properly.... But, I guess that might be unavoidable...
ok so last night i tryd tryd and tryd to tune the e85 and could get close to what i was looking for(w/out the conversion kit on). so i pluged my kit back in then gave it a try and came closer to another idea of tune but didnt get to it quite yet. but i know pretty much what i have to do. for you, you might need FRL and bigger injectors or either really big injectors(without a conversion kit).
ok so last night i tryd tryd and tryd to tune the e85 and could get close to what i was looking for(w/out the conversion kit on). so i pluged my kit back in then gave it a try and came closer to another idea of tune but didnt get to it quite yet. but i know pretty much what i have to do. for you, you might need FRL and bigger injectors or either really big injectors(without a conversion kit).
Yeah, I don't think the conversion kit is going to be all that helpful for most of us because all they do is increase the injector pulse widths. But, since most people are closed to maxed out on their injector pulse widths, it's just going to saturate and make tuning harder.
I'm thinking what we need is bigger injectors and / or higher fuel pressure and then an electronic way to trim out the excess fuel when we go back to pump gas.
So, it would be essentially be an electronic gadget that is the reverse of the conversion kit. You would tune up your car and get it working on E85, then plug in the conversion kit to allow an easy way to shorten your pulse widths by enough to run gasoline again....
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E85 ethanol conversion update?
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