Hey, I'm in need of some help.
I have a 2003 5.4L. I already added a Gibson supertruck exhaust and a Volant Cool Air intake. My goal with this truck is to make as much power as possible without voiding my warranty (i only have 9,100 miles on it). I did some research, and the things i found are:

Flex-a-lite Electric Fans
BBK Throttle Body
Mass Airflow Sensor
3 Stage Diablo Delta Chip

I've heard mixed opinions on everything here. This truck is a daily driver, but i want more power. I was outdone by a Cadillac EXT the other day .
I have the money to do all the mods at once and would get the chip setup with a custom program. I would also like to run 2 LED's for the fans with switches in the cab. If someone could tell me how much HP i could gain from all this, the reliability of the fans in the snow (etc), what i could do different, oand if there are any brands that are better.

Thanks, Jon

 

I have the Flexalite FAL-270 fans on my Expy, I dont know how much H.P. they gave me, but the power increase is DEFINITELY NOTICEABLE! WELL WORTH the money!