[demon2003]

I went to the dyno yesterday armed with my Lc-1 and the knowledge i got from here and other places with the goal of making more power on E85 then pump gas. I have had awsome results running E85 in my daily driver (07 STI) and my street car(86 camaro). First few passes were on pump gas to get a baseline to hopefully improve on with E85. First map i used i got with my DK ecu with it i made 166rwhp and 80ftlbs. This is a dynojet but in my opion it was a high reading dyno but i didnt care I was there for another reason. The afr was really rich i knew it would be by looking at the map when i got it. Next few runs was a map i made from looking at maps posted here it was a lot leaner and it made 173rwhp 82ftlbs with the afr not being to far off in the mid and perfect on the top end i left it alone and decided to start on what i came to do. We siphoned out all the 93 and put in a few gallons of E85. Long story short you need ALOT of fuel to get this gas to run right. If i would have had control over my top injectors i could have gotten a better tune but i got the afr around 8.3 wich is about max lean for power on E85 and we pulled a degree of timing to achieve the max power which was 182rwhp and 87ftlbs of torque. So i made more power took it out for a ride and it deffinently felt stronger. Here are the graphs first is my first run compared to my last one. The second is my best pump gas runs. No afr for the E85 runs i used my LC-1 and logworks to measure afr.

 

[demon2003]

Before people come in here shouting "IF YOU BELIEVE THOSE NUMBERS BLAAAAA" i know they are WAY high i used them to only see if i could make more power on e85 which i did i dont even care what they are. if it makes anyone feel better someone can photochop what they consider realistic on my charts and re post them :thumbsup:

 

[demon2003]

Contacted dynojet today and got the unlock for the start fueling utility which will greatly help with starting the bike on E85. Also found out that if i send my power commander to them they will allow me to adjust up to 154% compared to the 100% now and i wont have to get another power commander for the top injectors.

 

[Richs 69 repsol]

ok

ok

 

[cbr9rider]

Sweet, Is that from my old ecu and arata?

 

[demon2003]

Yes sir

 

[demon2003]

Over a month and still running strong little more tunning done and 1 slight modification to the fuel pump assembly had to be made but well worth it my bike is a beast.

 

[fastrob691]

Is there any way to log IDC on these things, I did not think the stock injectors and pump had enough overhead to allow the E85, I have tuned Evo's on E85 and recently we started on my friends STI, but he is doing the tuning on that as we speak. Also any word on the longevity of the stock fuel system on this stuff? The power gains are in line for a NA motor.

 

[demon2003]

You can monitor IDC in the power commander software they were actually no more then 80%. As far as the stock fuel system longevity like i said its only been a month i had 1 problem wich was the orange mesh at the bottom of the fuel pump swelled and pushed the fuel pressure relieve valve rubber hose up and pinched it this blew the fuel pressure relieve right out of the fuel pump assembly i simply cut about half a inch off the rubber hose and put the valve back in and had 0 problems since. I did also send my power commander out to Dynojet and made it adjustable to 154% because 100% at WOT wasnt enough for pure e85. Those numbers were actually on a pretty lean tune (.87 - .93 Lambda optimal about .77-.80 i think dyno will tell) now that i have my PC3 back and upgraded i will be back at the dyno in the weeks to come to get new numbers after the a couple new road tunes.

 

[fastrob691]

Awesome, good job, not many people have the know how to tune E85, what about timing? Are you tuning that as well?

 

[demon2003]

Yea doing timing as well didn't see any increases in hp by adding timing. I do have a DK ecu wich i think may have more timing then a stock ecu so more timing on a stock ecu you might see some gains.

 

[RRaisedHaze]

Yea doing timing as well didn't see any increases in hp by adding timing. I do have a DK ecu wich i think may have more timing then a stock ecu so more timing on a stock ecu you might see some gains.

When you say "more timing" is that the same as advancing it?

I'm trying to follow along since running E85 for more power is kind of interesting to me.

 

[fastrob691]

Yes E85 has higher Octane properties(slower burn) so you can get away with more power via increased(advanced) timing and or leaner AFR, usually a combination of both, thats where tuning know how comes in. Based on tuning on turbo cars E85 has an approximate octane of 110.

 

[demon2003]

Yea if anyone was seriously considering this make sure to check your favorite E85 pumps ethanol content every once in a while if your not running a wideband constantly because the content does change and wil change your afr.

Anyone felt froggy yet and dumped a gallon in there bike?

 

[sooperman12]

Updates on the tuning with the 154% PC?

 

[demon2003]

I never had it back on the dyno after the upgrade mostly because of the issue i talked about below but I deff could feel a difference through the mid range where i needed more fuel.

i have had nothing but issues though with my pc3,IM, hub setup. I sent it out to be upgraded it came back the way i sent it they said there was an issue with something else so i sent all of it in IM hub and pc3 and when i got it back it worked and i made my changes. About 3 weeks later it felt a little down on power plugged my laptop and once again i cannot go over 100%. I called dynojet and basically they said i can send it back they can do it again but it will prob undue itself????

I think i will be just getting a PCV 254% adjustable out of the box plus auto-tune. Shouldn't be too hard to get it to work on my bike.

 

[stevewix]

I never had it back on the dyno after the upgrade mostly because of the issue i talked about below but I deff could feel a difference through the mid range where i needed more fuel.

i have had nothing but issues though with my pc3,IM, hub setup. I sent it out to be upgraded it came back the way i sent it they said there was an issue with something else so i sent all of it in IM hub and pc3 and when i got it back it worked and i made my changes. About 3 weeks later it felt a little down on power plugged my laptop and once again i cannot go over 100%. I called dynojet and basically they said i can send it back they can do it again but it will prob undue itself????

I think i will be just getting a PCV 254% adjustable out of the box plus auto-tune. Shouldn't be too hard to get it to work on my bike.

There are quite a few pluses to a PCV. I have first-hand experience with PC-V and Autotune, and I really, really like it. All you have to do to calibrate your bike is ride it. The only proviso I would offer, would be setting the max +/- correction to 20% for the first build of the fuel trim table (plan on 50 miles of mostly highway, the trim table is rather short-term, low speed throttle transitions throw it off). After this, change the max correction to 5% and check back periodically. There will be cells that show reversion, and no matter how much fuel the sensor says to add or remove, it will never be enough. You'll end up with a surge or a flat spot (usually light throttle low-rpm). All you have to do in this scenario is zero out the target AFR for this cell to stop 'auto-tuning'.

I would be interested in talking with you about this undertaking, I think there's additional power to be made.

 

[ponrod]

Hows the rubber parts of your fuel system fairing??? E85 will eat every o-ring and rubber piece you have unless its rated for alcohol to begin with. Also, the fuel pump may die a swift death.

I am curious to see the results of a long term test on your bike.