The Auto have to run the NA ECU unless there is a way to find out exactly what the ECU controls on the NA ECU and convert it to to a TT ECU. I wonder how hard it would be to run two harness and two ECU's Use the TT ECU for controlling the motor and run the like or same signals split off to the "dummy" NA ECU which is only going to take info in and the info out will only go to the ATX computer. All of the true info in would be comming in from the same sensors that are feeding the TT ECU but you would need a way for the info out to look as if it were being processed. You wouldn't need any of the NA ECU harness out signal wires from the ECU to the sensors only the in signl wire back to the NA ECU. Maybe it would look like it is being processed even though it isn't going anywhere because the NA ECU would still be processing info from the car running off of the TT ECU. The only info going out from the NA ECU would be to the ATX computer. This would basically turn the NA ECU and ATX ECU into a piggyback system. Its probably just a few simple circuits that could be put in a nice blinking box and sold to the public for the magical sum of $399.
