Installed my af1 intake last night on my 2004 fx4 reg cab. Installation was pretty easy except that the air meter wouldnt fit in the tube lucky enough where i was installin it was my buddies port shop so he ported it out and now its fine. Performance, I really need a gatorback now the belt really sqeuals. Seat of the pants dyno says it was a excellent upgrade. Sound is awsome to me. I now have Af1 intake, magnaflow si/so, and troyer tunes this truck really hauls *** now cant wait to get some friendly drags races in.

Up next e-fans

 

You'll like the e-fans but make sure you are EXTREMELY gentle if you purchase the e-fans from troyer. Those adjustment pots to set the turnon temperature fail on many people and they're replaced at your cost if you don't complain soon, and even then I believe they will only replace one. I'm not sure what the break strength is on other controllers out there but Troyer's are very sensitive, maybe it's all controllers, I have two broken and I was denied replacement for either as they're overdue. I broke both of mine very easily, and I mean very easily early on, a couple users on fordtruckworld have done the same and several times. The e-fans provide nice topend gains so I'm not trying to shy away from that, you won't be disappointed.

 

yea i remember a long while back someone doing the own e fan kit i was thinking of goin this route

 

I just last week installed the Flex a Lite e-fan #270 (for the F150), perfect bolt in and everthing was reasonably simple to wire...nice set up to recommend. In combo with U/D pulleys I picked up and honest 3 MPG in a controlled mileage test test on cruise @56-62 MPH

Norm

 

enormous, how much did that setup cost you and what year is your truck?

 

Flex fans $400 and ASP Pulleys $200 on 04 Crew 4x4.