FirstFuzzy
Member
I have a 2003 5.4L 4X4 used to tow a 5000lb plus travel trailer. I had posted an earlier message and what I came away with is that using a Hypertech approach would not do much because the additional HP is generated at higher RPMs. Also, if you look at a HP graph, the before and after lines do not differ by much.
Putting a catback exhaust would help. Headers appear not to exist for a 2003 5.4L. Sometimes someone selling Gibson shows headers for a 2003 but they don't really exist. So, I am searching for reasonable ways to soup up the buggy.
I ran across some parts suggestions from a truck specialist (onestoptruckstop.com) for an Airmax Air intake system - about $250.00
Helix Power Tower (Throttle body spacer) - about $100.00
Chip $200-$400 (discussed earlier)
They tout a Power Package for $500 that has all three parts above at a price of $500 and it gets you 100HP for some earlier model expeditions.
Does anyone have any experience with the specialized air intake systems and the throttle body spacers? Do they do anything? Thanks in advance.
Putting a catback exhaust would help. Headers appear not to exist for a 2003 5.4L. Sometimes someone selling Gibson shows headers for a 2003 but they don't really exist. So, I am searching for reasonable ways to soup up the buggy.
I ran across some parts suggestions from a truck specialist (onestoptruckstop.com) for an Airmax Air intake system - about $250.00
Helix Power Tower (Throttle body spacer) - about $100.00
Chip $200-$400 (discussed earlier)
They tout a Power Package for $500 that has all three parts above at a price of $500 and it gets you 100HP for some earlier model expeditions.
Does anyone have any experience with the specialized air intake systems and the throttle body spacers? Do they do anything? Thanks in advance.
