got a question for ya's
i have a type 4 daughter board in my r34.
I know that the daughter board has its own EEPROM that we can change the values in while tuning in nistune software. And the original ECU's EEPROM stays unchanged, we just tell the ECU to read from our new EEPROM. Is this correct?
If this is correct, could i tune my car on pump fuel 98, then take the hex file from the daughter board's EEPROM and burn it into the original ECU's EEPROM, then re-tune the daughter board as usual on e85 fuel? then i just have to run a couple of switch wires from the jumper pins on the original ECU to the dash and i have instant capability to drive on either fuel.
But is it even possible to burn a new image into the original ECU?
and can anyone see any major flaws in my idea?