Did you contact the company you got the tune from?
Me too, just waiting on HPT. It is definitely rich as mine looks like a diesel when you put your foot down and gets worse gas mileage than my G8 thats making 400+rwhp.I am waiting for HP Tuners to get theirs on the market. I have it already for my GTO. GM must have these things running pig rich cause my exhaust tips are always black with soot. Dealer said its normal.