Until 1989 MB made a different unit for every car.
The difference(s) was Dependant on horsepower & torque curve.

Then they decided to build only 1 version & use coding plugs for all of the different variations.

Since it works OK, run it.

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MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
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