FreeFuel ECU patch - a flex fuel implementation to Evo ECU
The scaling I used I worked out by running different ethanol contents through my sensor and reading the voltage reported in Evoscan. I graphed them in Excel and used the best fit formula it calculated. I put this formula in Evoscan to display the ethanol percent.
Unfortunately my laptop was stolen last week and I didn't backup that particular information so I will have to do it all over again
Eventually I will just buy one of the Innovate or Zeitronix gauges to replace this box.
Im currently working on a e85 display that will include a 0-5v output that can be used for automatic switching. Ive been bench testing and hoping to have installed in the car by the end of next week
If you already have a 0-5V analog output from your Innovate ethanol content gauge, you don't need to build the converter circuit. All the circuit does is to convert the frequency output from your ethanol sensor into a voltage that can be read by the ECU.
Just connect your gauge output to the ECU pin that is used normally for map switching:
- Evo 8 4-plug ECU: pin 42
- Evo 8 3-plug ECU: pin 64
Follow the steps in the first few posts to patch your ROM and start tuning!
Just connect your gauge output to the ECU pin that is used normally for map switching:
- Evo 8 4-plug ECU: pin 42
- Evo 8 3-plug ECU: pin 64
Follow the steps in the first few posts to patch your ROM and start tuning!
Here is the project ive been working on
https://www.evolutionm.net/forums/e8...l#post11678130
https://www.evolutionm.net/forums/e8...l#post11678130
I've been looking at this for the better part of the month, does anyone want to attempt patching this to the 9417 family of ROMs?
I'm thinking if I front a cash bounty for it we can output some good for the community.
I'm thinking if I front a cash bounty for it we can output some good for the community.
what's the current bounty at? i would be wiling to pitch in w/ this bounty to get this to work reliably and into the hands of more tuners
If I didn't have family obligations, I'd spend the rest of the season teaching myself how ECU disassembly works
FiTronic does evo 8/9 and if you want to tune it yourself ill work something out with the person / tuner where they can tune single maps themselves and we can add their maps into the rom so its YOUR TUNE.
Feel free to pm me here or contact tom@tscomptuned.net (FiTronic - Self tune in the subject).
Feel free to pm me here or contact tom@tscomptuned.net (FiTronic - Self tune in the subject).
FiTronic does evo 8/9 and if you want to tune it yourself ill work something out with the person / tuner where they can tune single maps themselves and we can add their maps into the rom so its YOUR TUNE.
Feel free to pm me here or contact tom@tscomptuned.net (FiTronic - Self tune in the subject).
Feel free to pm me here or contact tom@tscomptuned.net (FiTronic - Self tune in the subject).
We understand that.However this thread is not about your product regardless of how comparable to the rom patch as it may be. We're not bagging your product, but please start your own thread about it and get out of this one to push your product. It's rather disrespectful to the thread starter.









