Cheap tricks? I think putting a TB spacer on a factory engine is the cheapest trick people usually fall for. :lol:
A good header is the first performance mod that should be done on almost any engine. Performance camshaft, roller rockers, work the cylinder head for a little more compression and flow, install an electric fan, aftermarket computer chip or program, free flowing air intake, free flowing exhaust, is the gearing right to take advantage of the engines power curves?, remove weight from the Jeep, bigger throttle body, TB spacer......lots of stuff.