GPmoto are like 600 but they are everything you could want equal lenth with an uppipe....http://home.att.net/~teaguesauto/exh...aust%20Headers or http://www.rallitek.com/products.asp...Y&HB=&ACC=&SP=

 

Certain headers iwllmake different powers at different rpms. If you can wait a few weeks, a few guys from nasioc.com did dynos on certain staged cars with different headers. This will also be in a magazine. Here is some info:

Headers to be included:

GP Moto (4-2-1)
Gruppe-S
Cusco
Borla
Fujitsubo
GT Spec (Gen.II & Gen.III)

Cars to be included:

2002 WRX Stage 2
2002 WRX Sage 4 / FMIC & UTEC
2004 WRX STI (bone stock)

Test will run like this:

1st run: Base run
2nd run: Swap out manifolds for headers (to see bolt on effects)
3rd run: Correct AFRs to same as base run (to see nominal gains)
4th run: Repeat of 3rd run to show effects of heat soak on power curves due to less loss of heat energy to the steel from the exhaust gasses.

All headers will be wrapped with DEI thermal wrap (provided by DEI for the test)

Speed,Style,Sound magazine will be doing the write up to be published in thier magazine also. (thanks todd!)

Genesis Racing and Development's dyno-pacs will be used to measure the outcome.

Here is a link: http://forums.nasioc.com/forums/show...hreadid=455046