Dual 16" fans will be fine..you can use the same belt. You are just taking the fan/clutch assembly off of the pulley.

 

The only time you will need a new belt is if you install UDP's as well as the efan.

BTW, truck is in the shop getting the Mark VIII installed. I know alot of people say its easy, but if something goes wrong, I want to be able to take it back in and have someone to blame besides myself! And mind you, this is the FIRST time I have not been a DIY project

 

The pulley stays, because it also drives the water pump. You simply remove the fan from the pulley.

 

k, thanks

 

UDP is in. Id say about 5 more HP to the wheels. You notice it the most when you are accelerating (obviously)

 

im a lil lost guys, sorry, what are asp and udps

 

ASP is the company that makes the udps.
UDPS>>Under drive pulley system.

 

oh... makes sence thanks

 

so do all these mods make a noticable difference or just on a dyno sheet?

 

so do all these mods make a noticable difference or just on a dyno sheet?

 

Programmer, UDP, E-Fans probably 20 HP, slight noticeable difference.

 

well what about mpg's. better or worse?

 

if you dont drive it like you stole it you will get noticably better gas mileage. but as it goes, more power = stand up on it!

 

I am getting about 1 mpg better with the UDPs and Efans in. I am also driving alot more aggressively than I normally do cuz I want to play around with the new setup. So once I go back to driving a litte more conservatively I expect that number to go up a little more.

 

so i guess my other question is, do you feel for the gains you aquired (mpg & hp) is it worth it money wise. i would hate to sink 1k or so and feel like it was all a waist.