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Well, since you're running a blower, that reduces the # of members that have similar setups to something a little less than 30,000.
For N/A cars, as a general rule you a) don't want to fill up with > 5 gallons of fuel before a dyno run, as the fuel trims get reset by the PCM (in the event you got inferior fuel, yadda yadda), and b)drive the **** out of it on the way to the dyno because the PCM compensates for the driving style.
So, you probably lost some by disconnecting before the run. I would guess you the rich problem is related as well. BUT, I don't have a blower so it is very possible I don't have a clue WTH I'm talking about.