I have an '87 1 ton with the stock 454. It has 108,000 miles on it. It's the most gutless truck I've driven (just about). Are all the low compression emissions motors this gutless? It has TBI on it, and it seems like I have to put it to the floor just to get up and go, to even keep up with tired 350's. I can hear the TBi open up and dump the fuel in (and it uses ALOT of gas), but even with little 235/85R16 tires and 4.10's, its a whole lot worse on power/acceleration than my Suburban when it had a tired 350 in it. Think a basic tune up would help? Or is it just naturally gutless?