Answer: I own a trans am with 310hp.When I bought it from the dealer.They offered a performance package in which they modified the computer settings for it to perform as if it were "Ram Air" it costed 3500$ at the time.Also upped the revs.With the button on.It revved 7000. My Friend owns a Trans am that is 275hp. Mine is significantly faster and was able to beat his by a car lenght. minimum.But I don't know about the 340hp??? any1 there to help??