FreeFuel ECU patch - a flex fuel implementation to Evo ECU
#166
Newbie
Thread Starter
The Evo 8 version that is available (and VR4 Galant / Legnum H8 version) is running fine. I have had this in my car for a year now and not had any problems with it including track days, dynos etc. Basically it has allowed me to forget the whole thing and just put in whatever fuel is available which is exactly the purpose of the patch.
I still have the Evo 9 ECU laying around but my car is running very well at moment with Evo 8 ECU so I haven't had much interest to convert to SD or do Evo 9 port. Maybe in the future if nobody else is willing to port to other ROMs (not that hard really).
I still have the Evo 9 ECU laying around but my car is running very well at moment with Evo 8 ECU so I haven't had much interest to convert to SD or do Evo 9 port. Maybe in the future if nobody else is willing to port to other ROMs (not that hard really).
#170
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No idea. AST has yet to address it, and the one U.S. guy doing anything with this had his car wrecked in an accident. It's on pause unless we can get a programming guru on the case.
#171
Evolving Member
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Come on guys, get IDA, get KPIT, get a good hex editor, disassemble and map EVERYTHING in the rom your working on to include memory areas, do the same for AST's mods (after you successfully patched a rom), find the subroutines, find the tables, learn the mods done to implement SD, work around them, identify tephra's mods, edit the disassembly and add AST's patches (of course changing addresses and memory areas to accommodate your flavor of rom) verifying alignment and memory mapping or re-mapping, use KPIT with your handy batch file to compile, chop the stupid header (and end of file garbage) it creates with your handy hex editor, disassemble again, remap everything to verify no overlap and code integrity, flash, test, and report. Its easy. I may have skipped a few steps lol. I'm really busy right now otherwise I would love to help. Good luck and I'm sure someone smart will jump on it.
#173
EvoM Guru
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I'm picking this project up where evoredy left off (thanks man) and will be posting progress installing it on my USDM Evo 8 running 9653E706.
GM Sensor received - http://www.ebay.com/itm/CHEVROLET-GM-OEM-13577429-Emission-Sensor-/121162154700?pt=Motors_Car_Truck_Parts_Accessories&hash=item1c35d3c2cc&vxp=mtr
GM pigtail ordered - http://www.jegs.com/i/Chevrolet-Perf...52241/10002/-1
Schematic and PCB laid out:
Components ordered from Futurlec.
Once I get the components I will build and test the circuit to confirm expected output then install and test on the car.
GM Sensor received - http://www.ebay.com/itm/CHEVROLET-GM-OEM-13577429-Emission-Sensor-/121162154700?pt=Motors_Car_Truck_Parts_Accessories&hash=item1c35d3c2cc&vxp=mtr
GM pigtail ordered - http://www.jegs.com/i/Chevrolet-Perf...52241/10002/-1
Schematic and PCB laid out:
Components ordered from Futurlec.
Once I get the components I will build and test the circuit to confirm expected output then install and test on the car.
Last edited by CDrinkH2O; May 27, 2014 at 12:47 AM. Reason: Corrected error in PCB schematic for LM317
#178
Evolving Member
iTrader: (12)
I'm picking this project up where evoredy left off (thanks man) and will be posting progress installing it on my USDM Evo 8 running 9653E706.
GM Sensor received - Chevrolet GM 13577429 Emission Sensor | eBay
GM pigtail ordered - http://www.jegs.com/i/Chevrolet-Perf...52241/10002/-1
Schematic and PCB laid out:
Components ordered from Futurlec.
Once I get the components I will build and test the circuit to confirm expected output then install and test on the car.
GM Sensor received - Chevrolet GM 13577429 Emission Sensor | eBay
GM pigtail ordered - http://www.jegs.com/i/Chevrolet-Perf...52241/10002/-1
Schematic and PCB laid out:
Components ordered from Futurlec.
Once I get the components I will build and test the circuit to confirm expected output then install and test on the car.