Hello everyone, I’m new to the forum and I’ve already tried to find out a little bit about the search function, but unfortunately I didn’t find anything suitable. To my problem: It’s about a Seat Leon 1M 1.8l Turbo Built 2002 with original 180Ps, engine code AUQ At 165tkm the car has a replacement engine, which now has about 15000tkm on the clock. Since the ATM is installed, the car has less power, I’ve already been in the workshop several times (was installed at a Seat, Audi, VW The loading pressure, etc., were allegedly checked and everything should fit there. However, I have haired on it that the performance is too little and after the second visit the vehicle came on a dynamometer. Result: approx. 160hp. The workshop does not take care of it, however, with the reason that certain tolerances would be normal. Now I have found after that that that the cracker had a hair crack, and have I have the Wow! IQ310 diagnostic device at my disposal for testing Würth. However, I don’t come from the car area and therefore don’t know all too well about it. There are no faults in the system. I can read out different measuring blocks for this car with the corresponding data sets. And one more thing, back when I was always driving into the workshop, went to the workshop. always the engine control light on, there was always a different error and at some point the one no longer went to the lamp. Then I thought well then there is just no error left, but the funny thing is now, if I for example the Lambda probe disconnected, then the engine control light no longer works, but it is stored in the error memory. If I turn on the ignition, then the engine control light lit until I start the engine, just as the battery light stops. One can help me further, drive now almost 1 year with too little power. I pack mountain off with tailwind and police in the neck 215mk/h according to Tacho, registered in the vehicle license are 230km/h. Until then