Quote:
Originally Posted by ft_sjo
So there's a few exhaust manifolds/headers out now which supposedly get rid of the torque dip.
One which come to mind are Nameless, FA20Club and Borla UEL.
So the first two above look reasonably similar, but the Borla is completely different. So it's not safe to assume the extra length of the first two is causing the increase in torque, as the Borla doesn't have that.
Discuss.
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You forgot the P&L, but that's beside the point. The reason those 3 do so well is primarily the fact that they are long tube headers. They specifically increase low end torque, but you still need a tune to take full advantage of the headers and clear up the dip.
The stock system is built for comfort and economy. The average joe wants a quiet, economical vehicle. People who mod are willing to sacrifice some of that.