The tuning box only has to lower the signal then the ECU is fooled.

Stop with your silly games, it is obvious that you just came on here to in very biased terms of defending a company..... - I am not slamming a company. I am telling you and everybody else that tuning boxes fool the ECU and is a VERY CRUDE way of tuning expensive BMW cars.

Now,, come on with a new reply with laughing your ass off at what I said and I am probably clueless once again?