Quick question: do you need to be running the stock ECU to be able to utilize a PCIII? My bike came with pipes and a stage III ECU already in it. The other logical question I guess would be since I already have the DP computer, would a PCIII really do all that much, or is it not really worth the expense? I'm eventually going to put either a 944 kit or at least high comp pistons in it at some point along with a bit of head work, so I guess I'll need a custom map when I do that. The bike is a '99 900SS ie by the way. Any suggestions are appreciated, Thanks.