A nice good evening, I’m new here ,maybe someone can help me, it’s about my bmw 7er f01 bj 2009 and 160000 kilometers down what I have done so about in 2 months, ne the workshop, flushed gearbox, flaps with because agr cleaned, glowing new with control unit, so and then read out, all things ok ,well what’s missing ,one engine optimization , so and now starts the problem, he made a test drive to enter all mature size, then on the venture everything made ,and now go ,then he can go back, and says ,you ,it’s so missing 30 hp, but all values ok ,but the turbo is ok ,no noises,no noises,nothing from because once the turbo is broken, he writes to me the ,beginning your invoice+ performance chart. About the error of the car: I assume that it has something to do with the Wastegate control or with underpressure control lines. Since one has seen during monitoring that the control has not regulated. By Autel Tablet readout software. because I don’t know so much, and my workshop, of course, wants to make a lot of money, and now want to make me a little smart, what he thinks, and of course what comes to me,I thank you for an answer