Quote Originally Posted by IC2 View Post
I guess that brings me back to my original question - about homemade cold air intakes. My big concern with this particular truck is that there is soooooo much that is computer controlled, including the throttle (fly by wire) I'm worried about what parameters do I screw up - if any. Does it mess negatively with my already ho-hum gas mileage for my 7400# vehicle?
Don't think you'd get enough return on the investment, if that's your concern.... but then that's not real unusual when playing with a truck anyhow....

the weight is the biggest hold back on the truck... Only thing I've ever got any kind of decent mileage out of in these behemoth trucks is a diesel. The diesels will really react to air flow improvements, bigger exhaust, and a chip... I've got a V-10 laying in the corner, someday going to build a light little car to put it in and see what happens....

Anyway, pulling around that much mass, a couple mpg improvement is probably about the best you could hope for... Changing all the lubes to synthetics would probably accomplish the same....