In regards to my '03 4.7. I already have Flowmaster 40's and Trueflow intake so what would compliment these best: the Fastman performance throttle body or the Superchips programmer? Another modification I haven't thought of? Anyone care to estimate the performance increase of these three together?

Thanks,
Tim

 

That is like asking which is better, peanut butter or jelly? They are both excellent upgrades by themselves, however, you will not get the full benefit of either without the other. Put it this way, the superchips programmer is the ying to the throttle body's yang.

In all seriousness, if you had to choose, I would go with the programmer. The throttle body is going to be a great add-on, but if you are not going to be able to compensate for the larger cfm of air, it will be pointless. After these two investments, you would definately want to look into a larger fuel pump, an adjustable fuel pressure regulator and some larger cfm injectors.

Let us know what you decide!