A few things.

Having a ME 2.0 - ME 2.1 / M104 / 722.6 powered 97 C280 and 97 SL320 ( + E320 parts car ) I've heavily researched making a swap into a 91 300SL body. I've also got 40+ years in and around the car business across many makes coupled with 20 in industrial controls / robots / PLC and other automated equipment. There are not any difficult problems to solve if the FI / trans system is used in it's _entirety_.

What is inherently wrong with the ME 2.0 / ME 2.1 system? ( See also 97 - 99 S320 and sort of similar era SLK though 4 cyl ) The cars seem to drive just fine in stock form.

The only real input a ME / TCU needs from the "car" is a manufactured wheel speed at the proper ratio to drive shaft speed, everything else is internal to the ME / TCU system. If there is another input needed, what is it? It makes no difference what rear mechanical gear ratio he is running as long as the TCU sees what it is expecting.

His target car will have a tone wheel at least on the differential pinion if he has non ASR / 3 channel ABS. If ASR / 4 channel ABS there will be a tone wheel at each rear wheel. The signal from one of these tone wheels could be run through a speedo fooler then into the ABS / ASR computer.

Think about this for a minute. Our guy would need to wire from scratch if going aftermarket FI. He could start out with all stock parts, drive the car then, if he wants to tune, gut a ME case to install aftermarket FI inside or use the ME case as a wiring adapter.

The chip key on a DAS X system is a 100% _non issue_ if all the parts are gotten from one VIN. If you have a DAS box that matches the ECU but no key, buy this sub $ 100 reader and some $ 3 chips and make make your own. It is possible to get a ME unlocked but that is $ 200 that I'd rather put towards hardware.

Reader
2013obdfactory

Key Programmer For Mercedes Benz

K-ey Programmer For Mercedes Benz Free Shipping | eBay

Key chip
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