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FreeFuel ECU patch - a flex fuel implementation to Evo ECU

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Old Dec 11, 2012, 07:37 PM
  #31  
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subscribed... Good Work

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Old Dec 11, 2012, 08:21 PM
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Originally Posted by ast View Post
It has been quiet in my front. but I hope to find some time to research what would be needed for Evo 9 ROM port and boost interpolation. I do have already some Evo 9 ROMs disassembled but I don't have any commented disassembly from some other developer so it will take some time to understand the differences to Evo 8 ROM. It would be also good to find a test car as I don't have anybody locally with Evo 9 who would be interested.

My car is running MAP EF2 and 1100cc FIC inejctors. No problems tuning with those.
If you or someone else were able to port to an 88590715 rom I would seriously offer my car for testing. It's my daily driver but isn't daily driven. Carpool for work and when with the family we rarely take my car.

It's mostly stock. Open filter & Intake, Hard UICP, 3 port BCS, 3" Cobb TBE running ~21-22 psi stock tapering to 19 psi @ redline. I'm sitting on FIC 1100's & Wally 255 that I haven't installed cause I would have to drive about an hour north or south to get e85 which isn't practical for every day driving. Wouldn't mind buying the new FF sensor and ECA. Seen e85 for 60 cents cheaper than 91 oct near work yesterday, I'd go straight e85 if I didn't have to drive an hour to get it, thus Flex Fuel patch is very attractive.
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Old Dec 16, 2012, 04:06 AM
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Originally Posted by thebluesky View Post
Okay, I gotta ask especially now that there seem to be guys who have finally really gotten down SD and now we're delving in Flex fuel. Maybe this needs to go in another thread, and if so, please direct me to it.

Is anyone on SD also running the flex fuel and making big power (650+ whp)? If so, how is the drivability? Have there been any issues with tuning and scalibility of injectors and such, especially when running say a 2000cc injector? Also, any weird glitches or hiccups s far?

The reason I ask is because now that this is finally a reality, and now that there are tuners out there who have mastered speed density on the stock ecu, I'm considering making the switch back from standalone.

My original question still stands, but with the expansion of whether or not any vendors have yet to try this as well.

This seriously opens up a world of options for me especially because I often move. Some of the places I move to have ethanol readily available, some don't.
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Old Dec 16, 2012, 06:52 PM
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Good stuff dude. I'll test this out on my drive to California from Texas here shortly. First I will find one of these sensors and have it shipped quickly if I can. I have to re-do my pump/93 tune anyways as I have just switched to E85 and sorted out all of my fueling issues.

I can log what the sensor thinks I have fuel-wise and fuel/timing maps over a period of time unless someone beats me to it.

It's been a while since I disassembled/reassembled anything heh.

EDIT: Found/Stole a picture of the aformentioned cheaper sensors from Chev/Holden 1.4L Cruze E85 FlexFuel Conversion

I'll let you know about this risk I just took :/

13577429 - Sensor - $55.35
13352241 - Harness - $9.60

paceperformance.com
Attached Thumbnails FreeFuel ECU patch - a flex fuel implementation to Evo ECU-flexfuelsensors.jpg   FreeFuel ECU patch - a flex fuel implementation to Evo ECU-f60482092.jpg  

Last edited by evoredy; Dec 17, 2012 at 04:50 PM.
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Old Dec 17, 2012, 05:23 PM
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Let us know how it turns out. Your setup in your signature is somewhat close to mine and I'm really curious how it performs.
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Old Dec 17, 2012, 05:45 PM
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@evoready. I ordered those parts last week. They are on national backorder.
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Old Dec 17, 2012, 06:46 PM
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Originally Posted by [email protected] View Post
Any patches for 9417 family roms as it uses raw load for fuel and timing, which IMHO is better for people still on the MAF...
+1

Thanks for doing this!!!
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Old Dec 22, 2012, 05:36 AM
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Originally Posted by evoredy View Post

EDIT: Found/Stole a picture of the aformentioned cheaper sensors from Chev/Holden 1.4L Cruze E85 FlexFuel Conversion

I'll let you know about this risk I just took :/

13577429 - Sensor - $55.35
13352241 - Harness - $9.60

paceperformance.com
Hi

this sensor outputs frequency.
How do you convert the signal to a voltage one before send it to the ECU ?
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Old Dec 22, 2012, 07:20 AM
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Did you read the thread? The answer is on the first page. There's another device needed .
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Old Dec 22, 2012, 09:26 PM
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sneak peak of my setup i have been working on...

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Old Dec 22, 2012, 10:39 PM
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Originally Posted by STLEVOIX View Post
sneak peak of my setup i have been working on...

Looks good...
What Rom are you using?
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Old Dec 23, 2012, 12:28 PM
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+1 STLEVOIX on the sensor location.
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Old Dec 23, 2012, 12:57 PM
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Originally Posted by LGshow19 View Post
Looks good...
What Rom are you using?
+1 - I see you're driving an '06 so I'm thinking there is a good chance you're running an 8859 rom. You're really making me itch to get this.
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Old Dec 23, 2012, 01:05 PM
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Old Dec 23, 2012, 04:22 PM
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Does that new flex fuel sensor just happen to mount to the backside of the intake manifold or have you fab'd something up?
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