Im converting my EVO 9 to run with E85 and Pump, gonna have to do fuel swaps for now until i port some flex fuel stuff into the 88590015 rom. If anyone wants to help me with that it would be awesome.

I have access to a dyno, and e85, and e98

My current mod list

• AMS TBE
• Kelford 272
• AMS Old LICP
• Walboro 255lph
• Cone filter
• MAC 3 port BCS

My power is 310WHP on my mustang dyno 27PSI at 3500 and tapers down to 22 by redline. 100% WGDC basically everywhere except 2500-4000
Im gonna crank the Actuator down a bit and see if i can work that stock turbo.

I just dropped in some Deatschwerks 1200cc low impedence injectors. Theyre direct fit and cheap. DW is allright, their dead times are off every single time though. These injectors suck at idle on pump with the low PW, E85 is gonna have 50% more PW so it should have a bit more stable idle. The stock injector driver on the stock ecu probably isn't top notch either. **** in **** out, i know this but its my own car so i can deal.

Here is what i got for injector scaling and dead time
1008 scaling
4.7v 4.800ms
7.0v 2.640ms
9.4v 1.824ms
11.7v 1.320ms
14v 1.008ms
16.4v 0.792ms
18.7v 0.624ms

How i got there if intrested, first i used MATH to figure that my 1200cc injectors were rated at a flow 2.14 times more that my stock 560cc injectors so i Multiplied the stock scalar of 513X2.14 and got 1097.
Then i drop in the supplied Latency values, Ran like crap. and the dead time curve looked like a crushed soda can. So then i just added .33 to the whole stock dead time curve to make the 14v value or .42 = the .75 that DW supplied. Still ran poorly but i got it idling and logged the trims. I trimed the dead times and the scalar to get it about right and drove it.

So when its in the idle area it was trimming +15ish, and in the cruise area it was triming -8ish.

The Ecu does it fueling calculation and come up with a required PW for the proper amount of fuel then it adds that PW to the Dead time PW and gets the total PW.
PW+DT=TPW
at idle the Dead time is a Very large factor because the calculated PW is about the same value. Dead times have the most effect at low PW.

So i added 15precent to the dead times and changed the injector scalar so the ECU would calculate 8% less fuel. Divide the Current scalar by 1.08 and got 1015

THen i logged more and got the car about right with a rinse and repeat process.

Tomorrow with the car in the shop im gonna put it on a bench power supply and log the STFT and Battery voltage so i can get the dead times perfect but the ones i supplied should get anyone with these injectors around the block and to the dyno. I went WOT on these numbers.

NEXT STEP,
Im gonna install a flex fuel sensor and get some E85. I'll keep this post updated

To be continued.

 

Ok So heres an Update, I installed a flex fuel sensor to monitor the ethanol content. Did the fuel swap, Make sure you get both sided of the tank, the return line must have flow to use the venturi to transfer fuel from the right side of the tank. I just took out the right side of the tank cover and pumped the fuel out from both side using the factory pump and a spare pump i have.

Filled it with e85, it was actually e82.
Tuned it, LOTS more timing, the car is severely knock limited on pump.
and i netted 70WHP from a fuel swap. were at 378whp. Stock turbo stock intercooler and piping, AMS LICP. Stock Manifolds stock o2 outlet. Stock WG.
27PSI then it tapers down to 23PSI, the Leaner mixture was able to hold a little more boost by redline.


its got more in it, I just fear im running out of fuel pump. The Walboro 255LPH isn't enough for this much power on E85. Im installing a Fuel Pressure sensor and a bigger fuel pump.

Im trying to work on a Flex Fuel Patch, I got IDA pro and a bunch of manuals, but this stuff is WAY over my head. I have a very very basic understanding of how microprocessors work. If someone wants to share a little time to educate me and help me get a jump start ill take it from there.

 

It has been awhile for me but I remember the 255 Wally was adequate for a stock turbo car.
I was running Bluemax 1450cc injectors on a 2.4L at the time.

https://www.evolutionm.net/forums/ev...-2-4l-e85.html

 

Yea, the wally 255 is easily enough for anything the stock turbo can dish out on E85.

What kind of AFR are you targeting at WOT?

Be careful with the timing if you aren't familiar with MBT. What timing numbers are you currently running at peak torque and 7k?

 

Did you log fuel pressure with a sensor? Im figuring that im out of fuel cause my PW is up more than it should be from pump to ethanol.
Possibly if fuelpressure isn't increasing 1 to 1 with manifold pressure the pump is running out. You can bandaid this with more injector but its not the way i do things

 

Im running 0.82 lambda WOT,

Im well versed in engine tuning. Were looking at about 13-14 degrees at peak torque areas and 18 degrees at redline

 

No.... The tunes I had at the time never had any lean issues or experienced high IDC's, so I never had any suspicion of being out of fuel pressure. I ran a wideband and never experienced lean issues with my setup. I was not driving a bandaid car ...... made over 400 whp on a mustang dyno for years.

 

That's good AFR. I'd aim for around .80 to .81 depending on the usage of the car.

That is way beyond MBT at peak torque. I highly recommend pulling that back by at least half before you vent the block.

 

i gave those numbers from memory
also I'm sure I'm on MBT and the tune is safe. It's not my first time tuning. I'm a professional, and have tuned a few cars on ethanol. Just having some fun with my own Evo on as much stock stuff as possible.

My car peak torques at 3800 I hold the boost back until then. The stock turbo will window mod this thing.

 

I have a flex-fuel sensor on my IX. I built my own bracket out of aluminum (it was a tig-welding project) to mount it. I did it this way because I could not find a CT9A alcohol sensor installation that I liked.

Are you using this in conjunction with the ECU so it automatically changes the fuel injection pulse-width and ignition timing depending on alcohol percentage?

 

Okay, just trying to help. Even 10* is way past MBT as found on a proper dynamometer. I'm also a professional and have tuned hundreds of evos from sea level to 12,000 ft, from beach to race track on over five continents, on Ethanol, over the past decade.

Sounds like you are all set though. Good luck and cheers!

 

Sorry, I wasn't trying to offend you. Ill Post a pic of my tuned timing map.
I don't think im past MBT but torque was increasing so i kept adding timing. Theses are the numbers i ended up with. My car only sees about 300 load and tapers down to 260 load by redline

 

 

No not able to Flex Fuel yet. I can only run Pump or E85 not a mix. I use the ECA to determine the content and know if i need a retune. I figure E80 +/- 5% should be an acceptable range. Right now i have Tephra V7 patched and use Ethanol for the Alt maps and Pump for the Main maps. IF i run down to Empty and fill with pump it runs allright on the pump tune for a tank then better on the next tank. 2 tanks to clear really nice from one fuel to the next. OR i can fuel swap by removing the fuel from the tank. I use the fuel pump to pump the left side and pump out the right side of the tank with a spare pump i have. PITA


The objective in this thread is to get help installing the free Flex Fuel Patch in the 88590015 Rom. Ive been studying everything about assembly and ECU dissasembly the past week. Its nothing that you should take lightly, many props to the ECU patchers on here.

 

We share the same goal.

If you would like a distraction, my thread is here:

https://www.evolutionm.net/forums/e8...or-hose-3.html