does that not create to much backpressure were the 4-1 comes into the small port... i see that it expsands back out... but its just looks kinda small... or is that better... i know running n/a you need some back pressure but that looks like a lil much... just curious

 

Its steped from 1.75" to 1.88" so that acts like an anti reversion.

the collector size was taking in cosideration when it was made for the size of the engine and cam profile. So no it does not create too much backpressure. The whole idea behind the megaphone and reverse cone is to prevent overscavenging at cams overlap at low rpms.

 

Are you ------- retarded? Just a yes or no answer.

On topic, that looks ------- great.

 

that is by-far the best header i have ever seen in my life!!!! keep up the good work

 

burns......doesnt get much better than that...we just used a burns collector on a nasty turbo kit for my friends audi

 

they do have some verry nice stuff.

here are some new pics of the progress. I been sick so I didn't get a chance to do much.

 

Sweet. I like it.

 

very nice looks great I wanna see what numbers it makes

 

im going to try to dyno one of my firends car this weekend. if the weather lets off a bit. its been snowing like crazy.

 

Did you already dyno with this header or a diff one? Theirs a 200whp stock block GSR graph in your HT thead but wasnt sure if it was the same header