Years parts are interchangeable?
Increases power and MPG'sfirst guy has no idea what he's talking about.
It adds extra power.but unfortunately it decreases you mileage.
It will increase milage, as it will make more efficient combustion depending on how you load it. If you Set up for 600 HP on demand you are going to get 3 to 4 miles per gallon. Intercoolers increase efficiency. its up to you how you make it work if you have computer controlled engines. IE, if you target for 100 HP you will get better milage. if you use fixed ratios yeah, its going to cost you. (either way your maintainace costs are going to go up dramatically)
all you have to do is go to auto zone and ask for the interchangeability of jeep exhaust systems. they will tell you what you need to know.
