Quote:
Originally Posted by geraldjust
Hi guys! ive been trying to see if i can make a CARB compliant Open source flex fuel sensor. inputs the 50hz-150hz. currently i have something that can already output a 0-5v output analog signal. and made a board that can output to canbus too. What im thinking is something that can work but i just need someone thats familiar with coding for this. I want to make it carb compliant so we cant hijack any other inputs. what i did notice here:
https://www.ft86club.com/forums/show...t=90692&page=4
Post #51 by @ ztan . That the ECU have a larger amount of IDs it can get info from then from what the car can signals actually have. Ive already reversed engineered all can bus signals. I noticed that some like hex ID 0x149 or 0x14A are not actually ever transmitted within the car.
So my thought is this: IF instead of grabbing the 16 bit ram value for the 02 or evap, could it be possible of grabbing it the exact same data but from any of the bytes that come from the mailboxes of those can id packets? So the only thing really needed is replacing the ram value (theoretically ) of the routine.
This should also theoretically make it compatible with 17+ cars since if those files also have similar ID. All we need is to inject the canbus signals and those ecus will also get it to work.
Can anyone confirm or see if im heading in the right direction. Also to be clear, the hardware is done and its open. Firmware is technically done. Can be used in analog form but i want to make it carb compliant.
@ steve99 if you think this is possible i can DM you for a factory tune with just FF added to it? |
Open Source and CARB compliant are mutually exclusive.