Hi,
I am making a project: Mercedes Sprinter with 3.2 CDI and automatic 722.6 gearbox.
What I have:
Mercedes Sprinter with 2.2 CDI 129 hp inline 4 cylinder engine and manual 5 gearbox.(Ecu CR 2.15 HW 4.0)

Mercedes W220 S320 CDI with 3.2 CDI 197hp inline 6 cylinder engine and 5 automatic gearbox 722.6.

What i will do you the wiring harness:
Get the gearbox wiring harness and put on Sprinter( It have 5 wires:+,-,diag,CAN H, CAN L).
Get engine wiring harness and plug in one of the ECUs.

What I want:
1.Make a ECU(prefferably the 3.2 one because i will need the automatic gearbox setup) to work with the Sprinter key or directly immo off.

2.EGR off

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The ECU SW are different but the HW are the same! The wiring from car to ECU are aprox the same!
Both ECU are readed with Kess with the universal 3 wire cable(red,black,yellow) mounted on the Sprinter.
The 3.2 engine is different from 2.2 by having a MAF, EGR, and 2 more cylinders(from my observation).