anyone running any type of aftermarket header on their 2004 and up f-150? if you what kind of power increased have you seen? thanks

 

I am using JBA shorty's until I find some longtubes, don't think they pick up to much power maybey 10rwhp?

 

Pacesetter longtubes, Very nice gains. Do still have some clearance issues with the passenger side hitting the firewall.

 

is it enough to notice? cause i just ordered some mid lengths. i think they should put out more than the shorty's. thanks

 

JBA shorty's: Here are the specs for MY truck, so realize each truck is different and may have different results. This does not include the recently added Xcal 2 tuning.

 

where did you get mid lengths from?

 

through one of my suppliers i got them for 440 shipped. they are the gibsons they bolt right up and replace the stock headers. they usually go for 550 to 600.

 

sorry to break it to you, Gibson is another shorty header just like JBA...

 

my guy said they were mid-length and also i talked to one person at gibson about it.

 

Thats pretty good, was that stock or what other mods did you have?

 

Bone Stock. I've recently regeared to 4.10's with Trac-loc LS, Xcal 2 tunes, drop in K&N. I'm waiting for the next AF1 group buy and I'm done!

 

was that just headers or full exhaust??

 

I have the Pacesetter longtubes I got 25/30 at the tires for 450 you cant beat the price for headers

 

naw man all the headers Gibson makes for the trucks with cats are all shorty headers that the only way they pass emissions...

 

2005 Ford F-150 4.6l 2wd dyno test with JBA cat4ward headers and JBA Catback split dual exit exhaust system.

Considering the stock exhaust is pretty efficient in the 04 & 05's, the increased gains are mainly from the headers. However, as it would be a big waste to free up all that exhaust pressure at the engine end and than bottle neck through the stock exhaust, I dropped the $$$ and got a more "flow-thru" system. Truly my only regret is not having added an intake system yet....but that is in the works.

If you want more info or pictures of the install check my gallery for the magazine shoot, or read the thread I started back when I had them installed:
JBA headers & SIDO Install w' StreetTrucks Magazine Article (long)

My Truck is in a Magazine!!!!

There are some video/sound clips on the second link. They're about a year old, so the exhaust has a deeper and slightly louder note now then when compared to right after install.