Originally Posted by Hellion
No clue what that means right now. im not feeling too hot today so its all greek to me lol.
You basicly enlarge the crossectional area of the stock throttle body. It's a little work. But it'll gain the potential flow of a stock TB by about 5% or even more if the TB is small. (I've done this to my Lightning)
But in order to see a gain you really need to spin the motor up past 5000 rpms.. and it *has to be* a restriction to begin with. On these 4.0Ls I have no idea if they are or not.