Hey XXxx_Totmacher_xxXX,
This system was used on an older 6cyl E-Class benz that was fitted with twin turbos. The ECU was a Bosch ME 2.8. Ours is the 2.8.1 so I'm not sure what the actual differences are. This system, in theory, should get you what you are looking for. Independent control over fuel and timing. Let me know your thoughts on this one. Heck they even have a MB specific version to boot!
http://www.powermod.com.au/index-2.html
Post #529 and on for more info
http://www.mbworld.org/forums/c32-am...roject-22.html
OT but your ID looks familiar, do you play COD World at War by chance? (PS3)