Originally Posted by In Focus
well the one guy said 6-8 whp then another said 14whp with a tune?
Did you happen to inquire as to where in the RPM range you could expect to see these gains? Still, I am skeptical. I think your going to see 3-4HP, 6-8 with a tune. For the money, A tune is going to net you far more usable power than a header alone. You already have quite a few mods. If you have an auto, then there are even more gains to be had with a good tune. Not hating on getting a header, but there one of the items you would normally get last, not first.
P.S. I am one of those 'nitpickers' that sit down and calculate how much I am going to spend for how much I am going to gain. You might not roll like that. If so just ignore me and enjoy your header!