Just wanted to note that Prototype's dyno was comparing with a Comptech. Check this out: http://www.comptechusa.com/images/dy...Headerplot.pdf

So, the Prototype header is less expensive than comptech AND produces over double the power gains for the majority of the power band. :eh:

Those are some really good gains, especially considering that he was only using a 2 3/8" exhaust. :eh: