Headers, Reprogram computer, Volant Cool-air, Catback, LESS POWER?

[Spenser]

I drop the H2 off at the Dealer here in Phoenix on Monday, Computer reprogramed (preformance) add headers, Catback exhaust, and volant cool-air box. Go in this evening and pick it up, was much louder than promised and it seems to be very sluggish especially after shift from first into second, it seems to "fall on it's face" a bit. I spent a CHUNK of money as the dealer warrants items for the length of the H2 warranty. I'm a bit disappointed, don't see much difference except on the freeway, and wondering what to do next? Any suggestions from the experts will be greatly appreciated. Thanks,

Kevin (casey2)
2005 Stealth Gray H2