does anyone know the rwhp on a 2003 4.6 reg cab 4r70w 3.55 STOCK? has anyone done an intake change with a stock mustang intake?

 

HI!... If it's a 4x2, then I'd say around 165-170RWH.P.

 

yes it is 4x2 I read about yours the other day I have dynoed at 200 with exhaust ,cold air ,t-body spacer, 4.10, ram air , custom burned chip

 

I'd get rid of the spacer, only use for that would be an expensive paper-weight. They actually hurt mpgs and hp on fuel injected engines, or at least that's what I've heard from everyone.

 

http://www.fordmuscle.com/archives/2...F150/index.php
looks like 208rwhp and 235rwtq the 06 makes same crank hp..

 

what are some other good hp gain products that have dyno proven results

 

I don't have any dyno info, but I would take the CAI back off. Or get you a product that monitors IAT's so you can see if it's hurting you. That alone causes variations in HP more than any other variable on a stock vehicle.

 

the cai is wrapped and filter is sealed too the hood with ram air ,it maintains 80 degrees on the iat

 

are headers, power pulleys ,coils, e fans ,cams worth the price .what else can be done too increase the power

 

long tubes and port the intake manifold are the best gains ive seen yet far