We finally filled my tank up with E85 on Saturday after talking about it for months. My EGT's are about 100 dgrees lower everywhere. I advanced my timing two degrees so far with no hint of knock. I'll move it up two or three more degrees after work today. I'll probably lean it out a bit at WOT, since my EGT's are still reasonably low. I'm overshooting boost now, so the reports that ethanol gives better spool must be true. My fuel scaling is 28% higher now and premium gas was 28% more expensive than E85 when I filled up on Saturday. So, there's basically zero cost difference. Its weird filling up, the stuff has a hint of gasonline smell, but mostly just stinks like rotten corn. All the environmental reasons you hear about E85 being good are a crock of ****, but its great for making your car faster. Edit: My car has Russ-modded 705cc injectors, Walbro fuel pump, uppipe, turboback.
and I'm still pissed that there aren't any e85 stations anywhere near me.....otherwise I'd totally be running it also right now. Mike -- what are your IDCs sitting at right now?
There is an FAQ on Nasioc from a user named HamFist about E85, he's been doing a lot of guinea pig work. IIRC, a stock fuel system will only handle about 4-4.2 gal of E85 to a full tank before setting a fuel trim CEL, but with bigger injectors/pump you can run almost full E85, although he said if it gets colder he'll put in a couple gallons of gasoline as it's harder to start when cold on straight E85.
i think hotrod has alot of info there as well. there is one main thread in the engine management section on nasioc that probably has more infor than anywhere else about e85 and subaru.
zero, I took the bus to work. But seriously, they got up to about 80% at 14.5 psi at redline. I haven't retuned my WGDC table yet.
With a proper reflash you could probably run it with stock injectors, but you wouldn't be able to run any boost, so your car would be a lot slower. You can't switch back and forth without reflashing. The stock injectors on EJ20 WRX's are kinda small anyway, and you have to flow almost 30% more E85 than gas. You'd end up with the equivalent of something like 305cc/min injectors.
Ok, my car runs on booze also. Here's some before and after road dyno plots. edit: give me a moment, 3rik, lol.
And here's my car on the booze. The only thing I've changed so far was the injector scalar and my fuel targets (now at a gasoline afr equivalent of 12:1). Boost targets remained unchanged (~18 psi in midrange tapering down to 10 by redline); I'm planning to bump up both boost (~19-20) and then timing. Fun stuff, indeed.
Society of Automotive Engineers. It's used on dynos to correct for temp, rel. humidity and barometric pressure. Think of it as a correction factor to "even out" pulls in different conditions. However, intake temps were within about 2-3* between dyno pulls.
Ok, I figured out how to get my nifty new software to overlay plots. The "baseline" is on regular gas and the other one is on booze.
Are you sure you should be running 327 ft-lbs through your WRX tranny when you're unemployed? I guess you do have a spare car now.
I think what I'll need to do is richen up the lower end to pick up some of the lost torque. Max rich power on e85 actually has a gas afr equivalent of something like 10.5:1. I've got some tinkering to do, methinks, hehehe.
Yes. :laugh: *keeps fingers crossed* Actually, I think it's kind of like the whole "glass tranny" issue from the '02 cars. A lot of it is how hard you are on it. I never launch the car and always shift nice and slow -- no shock loading here. *still keeps fingers crossed*
Data Log Lab: http://www.dataloglab.com/ Somebody even wrote a definition package so that Enginuity generated logs will work directly with it. http://www.enginuity.org/viewtopic.php?t=1719 So far from what I've seen and read, this thing is very consistant provided your logs are are taken on the same flat stretch of road (which is what I do anyways). It will even do SAE corrections and allows for multiple vehicle profiles (weight, gear ratios, wheel/tire combo, Cd, frontal area). Pretty cool.
Prooof? I can see it may degrade the oil viscosity a bit quicker but i highly doubt it will have much of an effect. Have yet too see an issue on a friends ~500whp honda have issues..esp running cheapo super tec oil
do the test yourself, get a cup of e85 put some oil in it. its like you put water in the oil, it milks up and floats on top, it does NOT mix.
Oil and E85 should not have such direct contact. Granted there will be some mixing due to the cyl walls but I highly doubt its going to react in the same way. So your test is not really conclusive to real world conditions unless your running extremely rich and im guessing at that point your likely to stall anyways
Heh, the richest my car will ever see is 12.5:1 (other than my initial 12:1 flash/test) so I'm not too worried. lol.
Ok, went out and grabbed a log earlier this evening from my usual spot. IATs were 68*F and boost now peaks at ~19.5 (well actually 19.3, hehehe) vs. the 18.5psi in the benchmark. Target AFR is still 12.5:1 but the timing has been bumped up about 1.5* from the benchmark taken a few days ago. All road dyno plots have been SAE corrected for temps, btw. I think I'm going to bump up the timing another 2* up top (and maybe cap max load timing to 15.5-16*) now that I got my fueling back in check.
I read that you can't run E85 on stock fuel system because over time it will eat away at the fuel lines unless you have stainless. I also read that you shouldn't use intank fuel pumps because unlike gasoline, E85 conducts electricity.
