Hello Ulisse i have read what you stays , my italian is not the best but i hunsderstood, the thing that you say theoricly could be right, but i have friends inside lexus dealers And this bypass here in Portugal was made but the lexus itself, when i discorer how to do it my car was still in warrantie And we made meseruments And test i have this bypass since 30.000 km in it my car car has now 169.000 km And we made test to my dpnr And he is totally clean!!