Well, im looking at getting my first mod for my magnum

Im not sure what to get,

SC programmer
flowmaster exhaust
or CAI

help me out guy

edit:

My goal in the end is to get 400hp,

in till they make better pistons, so I can use the supercharger

 

Well the SC will give you the most noticable gain, and with each mod you can reprogram the SC so you will always get the optimum performance.