point blank if you took it to a acura dealership and they did stuff without you telling them the work should have either been free or i would have made them buy me a new exhaust sorry to tell you but the guy you were dealing with was just sorry as hell thats not good business at all. they were just taking advantage of you because you drive a nsx and probably figure you shit money. here in atlanta i like www.barancoacura.com they are really good here and treat me great but the one i told you about is around the same price they are here is the link to there address as well

http://www.aandhspecialist.com/index.html

hope it all works out for you whichever you choose both are great i know from personal experience