well the truck picked up 25 hp and 28tq peak with larger gains under the curve. go to the site to see the graph or the pdf is here
http://www.briansportal.com/tbbuildup/swheaders.pdf

 

The improvement in the torque curve is incredible for only the header change. Your motor loves loosing back pressure. Would have never believed it until I saw it. That you have to feel in da pants....Good job!!!

 

looks like some solid gains, congrats

 

Thanks guys. It made a pretty good seat of the pants impression too. Not to mention the 200 feet of rubber I left pulling of the the shop the other day.