Originally Posted by PontiacDad
Before going with a smaller pulley at least improve the air intake first. Exhaust work is a great improvement but the air intake is enough. Dont just swap the pulley out by itself, the knock retard will take all your power gain from the pulley swap if you do.
Well, it won't take all of your power gain. You will almost always still have a very noticable gain. It just won't be very good for your engine, and you won't have anywhere near as much of a gain as you would with an air intake, plugs, t-stat, exhaust work, etc....