Unless toda's redesigned their header take it off and put the stock one on with your testpipe. You'll have a higher top end gain. The test pipe is what's making the difference not the header. The header may add a couple hp in the middle rpm range but it cost you hp on the top.

fltsfshr

i just noticed how old this is..who keeps ressurecting these suckers anyway?

 

why did we bump a 2 year old thread?