I am really interested in buy this header system...

SuperMaxx Header System
from Dynatech Exhaust Systems
Item Number: 122622100S

BUT, can anyone give me some feedback on this system. i would really appreciate it.

 

Thats the cream of the crop.

 

If you want to save some money, get the OBX Long tube header kit.

Love mine and definitely worth the time, money and effort

 

American Racing Makes a really nice set. There primaries are 1 5/8 which i think is more suitable for our engines NA compared to the 1 3/4" from the other companies.

 

The American Racing set up is for 05-09 2WD F150's only. So if your truck is OBS or a 4x4 you are SOL.

 

I thought American Racing had a 4x4 version?

American Racing is probably the best long tube available for our trucks.

OBX is a dynatech rip off.... I am VERY pleased with the quality and fitment of my OBX setup.

 

Did you gain anything with your OBX headers?

 

No idea, hard to tell. My butt dyno said I did.

I really didn't do it to add power, I did it to help with exhaust gas temperatures.

I know I 'lost" boost when I put them on. So I know I'm flowing better.

 

Yea i remember you saying you did it for gas temps. how much did you drop? I know some are saying they see 2lb drop in boost?

When i had my pacesetters on, i hated them so much. but alot seem to like the OBX, may need to give them a try..

Whats your opinion on the 1 3/4 primaries, to big for the hp levels?

 

why didnt you like the pacesetters? I haave them on both trucks and I have no problems.

 

1) they didn't fit, they sat right against the body of truck
2) lost tons of power. i lost over 30rwhp/25rwtq (i do all my testing on same dyno)

i personally just think 1 3/4 is way to big for the hp levels. maybe if it was a good 500 rwhp it would be a good upgrade.

 

No idea how much I dropped, didn't really measure. Just know they would.

I really wonder if the tune for those pacesetters wasn't right...

The OBX's are dynatech knocks off, and a year or two ago dynatech headers were the "best" headers for our trucks and showed good gains.

 

I can vouch for the OBX Headers, great quality, design, fitment wasnt a problem, even on an fx4 truck. The headers took 5 minutes to get in and bolted down per side. The hard part was taking everything apart and putting it back together.

I drove around with open headers for a day before getting the rest of the exhaust fabbed up and it sounded like a v8 speed boat, no joke. Starting it up to this day sets off alarms, and shakes some insides of houses. It is a great kit with no problems so far.

You can sure hear the ticking a lot more but i dont mind. Had them on for only 4,000 miles but theyre getting louder everyday with the x pipe, dynomax bullets and 4" tip setup i have going.

Theyre only $550 shipped and for half to a third of the price of the dynatechs theyre worth every single penny and comes with a lifetime limited warranty.

Butt dyno says there's improvements, the sound is a big improvement and mileage is a plus!

 

well i have i 2005 F150 XLT 5.4L V8 4X4

 

Check my sig: 08 5.4 fx4