Originally Posted by SUL7ENAZ
Sorry if I got that backwards.... My mechanic said that for my app. it wasn't worth it (he's owned a 5.9L ram with headers before). I am def. with you on the fueling. I've been thinking of either modding my kegger or doing a hughes F1 Air Gap. I've heard mixed reviews on the hughes though.
talking to Hughes over the phone, they told me with just the intake, you actually lose some low end torque, but gain high end power. However, combined with a tuner, it made quite a bit more power from off-idle to the redline.
Also, a cam along with the same tuner would make a huge difference, as the same guy told me that the 5.9L cam is one of the smallest grind cams ever produced as its meant for instant, off-idle torque. However, in the power band, theres a point where torque disappears rapidly, and thats because the cam is way too small.
So, a cam, the intake, and a tuner to go along with it (preferably the ones that you tell them what you have, and they preload tunes for you), and you can expect quite a large boost in power. Definitley at least 75hp and tq I would say...from what I was told anyway.
But, supposedly, without a tuner, mods can actually hurt performance as the computer doesn't know how to make use of it.