[nhluhr]

here is the link to the magazine article:
http://wrx.grapon.com/exhaust/headers/wrxheadertest.pdf

and here are high-res versions of the charts (colorblind people go find some crayons)
http://wrx.grapon.com/exhaust/headers/Boost2.jpg
http://wrx.grapon.com/exhaust/headers/Boost4.jpg
http://wrx.grapon.com/exhaust/headers/Overall2.jpg
http://wrx.grapon.com/exhaust/headers/Overall4.jpg

And here is another independent test of various exhaust manifolding and headers:
http://forums.nasioc.com/forums/show...ghlight=header
along with his high-res results:
http://wrx.grapon.com/exhaust/header...omparo-SAE.jpg
http://wrx.grapon.com/exhaust/header...ll-Comparo.jpg

Now let this thread die again.

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