Hello
New to the forum but hoping to find contacts that can help sort my electrical issues
I'm based in the UK (Midlands) and have done an Audi BXA V10 Engine swap from a C6 S6, using the twin OEM Engine ECU's (serial numbers 4F1 910 552 CX).
The entire Authorization system is also grafted into the car, and once cranked the engine fires up and runs.
However. Audi has a 4000rpm limited built into the ECU - which occurs when it doesn't get the CANBUS wheel speed signal from the ABS controller (thinks the car is stationary)
There is a similar one when the radiator cooling fan modulator isn't detected that also caps RPM.
Im looking for someone experienced in coding that can raise that wheel speed RPM limit to ~8000, above the engines own RPM limit, and remove the Fan limit too
I have also considered making an Arduino to insert these signals, the wheel speed isnt too difficult, not sure as yet on the Fan controller and if its CANBUS based - from my following of the wiring is Not, just a PWM speed controller. These can be hard to mimic (the impedance of) to make the Engine ECU believe its attached, but maybe simple to just wire on a controller from a wrecked car that goes to nowhere.
Adding the Arduino has another benefit. I can also use it to send a regular 0x3C0 (Klemmen_Status_01) signal.
This I understand to be the Wake Up sent from the Comfort Control module to all others to get them going. initiated if a key is sensed near the car for example to then allow the various ECU's to hear each other going engine start up commands. This may explain why mine isnt cranking from the key turning in the key reader, despite the lock mechanism etc all engaging/disengaging. It behaves like some start precondition isnt being met -
Yes: I am providing the Clutch depress, Gear in P/N and Brake depressed signals. But the system CAN readout tells me its aware it cant find the Body Control module
[Ignition authorization:
01330 - Comfort system central control module: No signal/communication ]
Regards
Logan
View attachment IMG_4314.JPEG
New to the forum but hoping to find contacts that can help sort my electrical issues
I'm based in the UK (Midlands) and have done an Audi BXA V10 Engine swap from a C6 S6, using the twin OEM Engine ECU's (serial numbers 4F1 910 552 CX).
The entire Authorization system is also grafted into the car, and once cranked the engine fires up and runs.
However. Audi has a 4000rpm limited built into the ECU - which occurs when it doesn't get the CANBUS wheel speed signal from the ABS controller (thinks the car is stationary)
There is a similar one when the radiator cooling fan modulator isn't detected that also caps RPM.
Im looking for someone experienced in coding that can raise that wheel speed RPM limit to ~8000, above the engines own RPM limit, and remove the Fan limit too
I have also considered making an Arduino to insert these signals, the wheel speed isnt too difficult, not sure as yet on the Fan controller and if its CANBUS based - from my following of the wiring is Not, just a PWM speed controller. These can be hard to mimic (the impedance of) to make the Engine ECU believe its attached, but maybe simple to just wire on a controller from a wrecked car that goes to nowhere.
Adding the Arduino has another benefit. I can also use it to send a regular 0x3C0 (Klemmen_Status_01) signal.
This I understand to be the Wake Up sent from the Comfort Control module to all others to get them going. initiated if a key is sensed near the car for example to then allow the various ECU's to hear each other going engine start up commands. This may explain why mine isnt cranking from the key turning in the key reader, despite the lock mechanism etc all engaging/disengaging. It behaves like some start precondition isnt being met -
Yes: I am providing the Clutch depress, Gear in P/N and Brake depressed signals. But the system CAN readout tells me its aware it cant find the Body Control module
[Ignition authorization:
01330 - Comfort system central control module: No signal/communication ]
Regards
Logan
View attachment IMG_4314.JPEG