I think I remember seeing those numbers before, or at least plots similar to those showing similar gains. I like to look around on the ZX2 and Focus forums every now and then.
I'm concerned about the header having clearance in front of the engine to fit, which is why I haven't ordered the JBA cat foreward headers or the cheap-o ones from BAT. I can't afford to buy something that I'm not sure is gunna fit so I'll let someone else guinea pig some on a Contour first.
