Can't say what you got but I can say that if you disconnect the throttle switch the idle compensation adjustment you are turning won't work. Since it is only for idle mixture compensation when the idle switch is open the adjustment doesn't do anything.

This simple fact forms the basis for the method I have adjusted those D-Jet systems for near 30 years. The system base mixture is adjusted on the MAP sensor. To do this at idle I disconnect the idle switch which takes the comp circuit out of the picture and I can adjust what will be forming the mixture down the road. Set it to 1-2%CO and plug the idle comp back in and adjust to best idle. All after setting the timing to at least 5deg over factory spec.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician