Could you even understand the Marks wire system? It really isn't complected but I bet you couldn't follow it and its nowhere near as complex as a Benz setup.
As was pointed out. Someone on here has an AMG and wants to go one size up on the tires and cant because the computer will throw a hissy fit. This person has far more ability then you to correct this but wont mess with it because of its pointlessness.
Now you want to take that motor and trans then remove its yaw, wheel angle, camber angle, toe angle, brake temp, wind temp, wind speed, exhaust temp, vertical g, horizontal g, lateral G, GPS etc etc sensors away and expect it to perform anywhere near what it was designed to do? Not bloody likely.
As to the brother that is a super genius with code, well thats just great! Just cause he can write code don't mean he can build a computer that ONLY A MACHINE CAN SOLDIER from scratch. Then again I guess it can mount in the trunk. Nano soldiering is a waste anyway, right? Would be better off getting an already built ECU from Haltech, Motech or FAST and writing his own software. Of course being its around 100 MILLION lines of code it will take one guy quite some time to write all that. Frog will be in his late 200's by then so he may not still be alive.
You sure you have the abilities for this? Isn't your brother the guy with a full blown race car that cant make it hit 1g on a skid pad?
Then again I guess delusional works for some people. After all, the old 190E was the best chassis ever made right? And the cute little cossy 4 banger is a beast? That combo will surly smoke my Mark on any and every kind of track?
You really need to sell your Mark and stick with the import crowd.