In Knight Rider's defense, the "How To Be a Good Poster" link that was posted could be taken as an attempted put-down. Clearly, those of us who post here and have followed Sady's progress know this was
NOT what was intended. I will say that the tone of posting here, unlike many other forums on the net, is polite and genteel (esp. now that OD is gone
). I'm Knight will quickly discover that he'll get much better results if he adheres to that.
Now, Knight, I believe that there are two varieties of MB turbo. One (KKK) has an adjustable wastegate, the other (Garrett) doesn't. Of course, in either case you could have crud keeping the wastegate from fully closing, and therefore never make boost.
I thought the ARV you asked about was a feature of the OM603? Do you have an 300SD or a 300SDL?