If your talking about SS, then I assume your referring to the ARC-I and ARC-II?
I would be curious to know how they work on our cars, seeing that the S-AFC isn't smart enough for the MY 2000 plus ECU's. I am not too familiar with the SS device, though it would be nice if one of their units could be used on our cars and not have problems with being overridden. They would surely aid in helping eliminate our tuning troubles. Goodbye mechanical RRFPR, hello electronic controlled fuel delivery.
I know that someone did put a S-AFC on their 2000 RS and had it dynoed. It definetly worked and the guy gained horsepower. What he SHOULD have done is gone back two-three weeks later and dynoed again to see if the changes remained or were overidden.
Graham