Originally Posted by 18psi
(Post 1355740)
for the record, I've ACTUALLY tried this with Toms FFTHUPERCHARGER. cause when I call someone a moron, and their whole forced induction method moronic, I like to speak from experience.
200-220F at cruise, 250-280F at 8psi of boost, on e85, and car made absolutely no friggen power cause it was ingesting lava Good look. This is what I needed to hear. |
1 Attachment(s)
I believe I might have figured out how you can run E98 without an IC. You will need an extra injector AND
Attachment 183282 |
I stacked 8 powercard pro's inline and made 6900hp with -200F IAT's
had to install block warmer to keep the engine from freezing. had condensation on the turbine |
Bahahahahahaha. Sold.
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Originally Posted by farpolemiddle
(Post 1355749)
Bahahahahahaha. Sold.
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But for now I am going to go with this to be extra safe.
https://cimg6.ibsrv.net/gimg/www.mia...e2b8d8f97.jpeg |
that will get you started. you'll need another one in the rear too
(that's what he said) |
Originally Posted by Dustin1824
(Post 1355721)
You could buy E98 and add as needed if your tuned for real E85 and you get a weak batch (I've heard it fluctuates down to E70 at times) for peace of mind
Are there other options to richen a low ethanol content "E85" like 98% denatured alcohol? |
see post #2.
also it would richen up with less e content. opposite with more. so it's naturally a "fail safe" |
As 18psi has said, even with little amount of ethanol, the benefits are high and it actually gets to a diminishing return the higher you go after 30. So if you have access to E98, mix it up with gas unless you are getting it cheaper than gas!
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Originally Posted by 18psi
(Post 1355766)
see post #2.
also it would richen up with less e content. opposite with more. so it's naturally a "fail safe" i.e. if we tune for E85 then blend the maps back for lower E content. So the tune isn't more aggressive at E85 vs E70? Or that an aggressive E70 tune reaches MBT and therefore there's nothing more to gain up to E85? |
Both will get you to, and well past MBT.
Meaning you really don't get to run any more spark with 85 vs 70, cause you're already running ALLOFIT The only real difference is you're about a point leaner with 85 and your fueling needs to accommodate this. |
Is there any real data on the relationship between ethanol content and knock prevention/timing advance.
I have heard 3rd hand that the guys at English Racing tune flex fuel very conservative. I.E. as soon as you don't have a certain amount of ethanol (E70? E80?) they dump a bunch of timing out. But I hate information like that, impossible to trust. I assume you can tune the fuel mix quite linearly because you are just trying to hit ideal AFR's, but I don't know if timing follows the same curve. |
I don't really think there can be a "universal chart" like that.
There is e85, then there is e85, hundreds of pumps with varying content and purity and quality, and the bottom line is it's way better to be conservative and do what ER does than to risk it with a more linear transition. But that's all subjective opinion. |
I don't know much about how this stuff is regulated btw, but I bet it's.......not
Like, companies just kinda run what they think is right, and as long as actual content of e is at or higher than advertised, they're "good" |
seems like you cowboys have almost got a consistent flex sensor "path" figured out, I'll be reading that more when Marcello comes down to the Sac and we try to get his newly rebuilt MS3 to run it
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The only place around that we have e85 is called Jay's garage. And they cater to the "enthusiast". I'd be willing to be that it is someone constant, they seem like the kind of place that would pride themselves in that and advertise it.
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Originally Posted by 18psi
(Post 1355780)
seems like you cowboys have almost got a consistent flex sensor "path" figured out, I'll be reading that more when Marcello comes down to the Sac and we try to get his newly rebuilt MS3 to run it
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Originally Posted by aidandj
(Post 1355704)
From what I've read vlad hit a good point with the part about needing gasoline. It lubes stuff in ways that alcohol doesnt. (there is a dirty joke in there somewhere)
You have to go to extreme limits to get e85 to knock. Jays garage is like $3.00 a gallon for e85. Show up with a 55 gallon drum and spend half the price. |
Originally Posted by bcrx7
(Post 1355771)
As 18psi has said, even with little amount of ethanol, the benefits are high and it actually gets to a diminishing return the higher you go after 30. So if you have access to E98, mix it up with gas unless you are getting it cheaper than gas!
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