Whatsa matter with a 'lil smoke?......
Seriously though.......
Only way to roll the coal is to add more fuel. Either by way of bigger sticks or tuning, preferably both.
Remember, smoke output has an ugly head though......increased EGT's.
On a '99, if you wanna roll the coal you need to look at either an Edge Comp or a Quadzilla Adrenaline. Those are about the best bang you'll get on a 24V.
As far as cheap, you can always try the smoke switch mod, but that has varied results from truck to truck.