tjkj2002 wrote:
All you listed does nothing for mpg's. Maintenance is the key.
Without actual internal modification a 4.7 TB,intake,or exhaust can not add any mpg's or power(moves power band is all).The engine can only suck in so much air un-modified.The stock exhaust is specifically tuned for max mpg's already,changing it will actually reduce mpg's and low end power.
Adding a lift will also reduce mpg's,more so if you add bigger then stock tires and don't re-gear.Re-gearing will net you "more power" without actually creating more HP or torque.
You want a 100% guarantee to increase mpg's is to plug your air filter and drive normally.Less air entering the engine equals less fuel being used.
After trying sevearl things ( just to prove a point ) on mine He's right on all accounts
Gearing is the best way to go if going even up a size or so, rest ( CAIs/Exhaust etc ) are only playing games with your mind
