my car is 1994 325i sedan the ecu is 261 200 413
one more thing i realized was that not only the chip removed the check engine light i had before but also when i put the stock chip back the check engine gave a code 1222 which is lamda control 1 which i think is oxygen sensor before that the code was 1444(no fault)
now i dont know if my oxygen sensor is weak or the chip is crap
the car does not idle roughly i dont really feel a loss of power with the stock chip