Rock472, I am fairly certain you have a cracked exhaust cooler - same issue as peteo. As soon as I mentioned the smell to my SA he immediately asked the tech to check for cracked exhaust cooler and sure enough that was the problem.
You need to dump your current dealer and try another one . . . your current one is simply blowing smoke . . . the SI you attached *does not* address your issue which is exhaust smell inside the cabin . . . *not* soot near the turbocharger!