I have a 1999 F-250 with a 5.4 in it. Im tryin to get all the power i can out of it without goin into the engine. I have intake, throttle body, electric fans, programmer, exhaust and gearing. I have a big truck and I need the power can somebody give me some help.

 

Your about topped out without adding a supercharger or upgrading to PI heads.

 

Thats what I thought but I cant find a charger but the lightning has the same engine with a charger, idk been lookin online for weeks and cant find anythang

 

One thing you didn't talk about, what's your rear gear ratio?

 

its 4.10s i was just messin around with the ratios im wantin all the power i can get without havin to go over 4.56 sorry about that