Damn it, got me a chip and used it under professional supervision!! Control unit re-installed, … thumb pressed … and … he jumped on!!!! Good !!!!Just go and a test drive!!! The first thing to say was that my idle speed was down to 480 (before 550), and he shone at the first meters while taking away something to swallow away!!! Second, he banged (as usual misignition) when I chased him in idle at the traffic light briefly up. (but only once,dana) 3rd, my bubbling (more like misignition, real loud) is gone now!! can do what I want!!!! And last but not least, I didn’t find that the cart went better!!! Tech Facts: E 34 5.40i, V8, 289Ps, 400Nm + SKN Chip + 22Ps, + 30Nm = 308Ps and 430 Nm however like series and low idle speed!!! Ps.: Someone told me that he had to drive in first ?!?!?? M.f.G. John