A manual ASD install would be possible for someone experienced and knowledgeable but not an easy job. I know in the factory installation it is powered through the OVP (asd cars tend to have a different ovp relay); also there is a switch on the brake pedal which activated and presumably cuts out the ASD operation for some reason.

Have a look a the video I posted on the first page to see it in action. You don't strongly notice it activating. The only time I notice it is if it's wet and I pull away at speed inducing wheelspin. When you hit a certain speed (19mph by the looks of things) the acceleration occuring can reduce - this is I presume due to the ASD cutting out and me being left with less rear lock up and less traction.

In the dry, in bends, and making a tight turn while pulling away, I don't notice it operating, so either it's quite subtle, or the existing LSD effect is making a good difference already, or my clutch packs are worn out.

Incidentally my ASD diff has slack in it and makes the drivetrain clonky; is it rebuildable and could I do it myself?

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190E's:
2.5-16v 1990 90,000m Astral Silver
2.0E 8v 1986 107,000m Black 2nd owner
http://www.maylane.demon.co.uk/190esmall.jpghttp://www.maylane.demon.co.uk/190esmall2.jpg