indylude18 said: As already stated, you are stuck with your current ECU if you want ATTS to work. If you keep your original ECU, you will have to either replace the immobilizer and get new keys programmed or figure out a bypass. While a bypass certainly is possible, thankfully no one on this forum has been dumb enough to provide the world with First, you need a key with a working chip. Disassemble it and remove the chip (see below). Then permanently install the chip where it will signal the immobilizer. Then, the immobilizer will always think that a chipped key is starting the engine, and it won't kill the engine after a few seconds. To do this, turn on the ignition, use your centralized button to enter the digits, several quick presses (example: 2 for digit 2) then a stop of one and a half seconds to confirm the digit and resume, replicate the process until you have entered the entire code. This should enable you to start your Audi Tt without having to remove the immobiliser. The immobilizer system is an electronic security feature integrated into the vehicle's engine control unit (ECU). It works in conjunction with a transponder key or key fob containing a unique electronic code. When the key is inserted into the ignition or brought close to the vehicle, the immobilizer system reads the code. Vay Tiền Nhanh Ggads.

how to disable immobilizer