Performed the Gotts intake mod last night on my 2001 Scab 5.4l. so far so good! Install didn't take long at all. I've noticed a couple degree reduction in my IAT. Driving after idling for a few minutes IAT drops quicker than before. The seat of the pants Dyno feels a bit quicker throttle response and the engine doesn't seem to work as hard at highway speeds. Time will tell if it helped out any on the MPG. All in all I believe it's a great mod to do for next to no money at all. Parts cost a total of $10.