Just Bought A 99 Ram 2500 4x4. Looking For More Power. Were Should I Start. It Has 4" Exhaust & A K&n?

 

Fuel Pressure gauge, while you're at it get a pyro, and boost gauge, and a tranny temp gauge if you have an auto.

Then I would go with a Smarty. You could stack it with a fuel only box down the line easily if you want more power later.

 

ditto

before doing any power adders id get a set of gauges so you can keep an eye on the vitals

 

yup, gauges, then smarty, then clutch/tranny upgrades, then either injectors or a tst then a turbo then a..........

 

Looks Like Gauges Win. Then A Smarty

 

Good choices.