Thanks for posting your dyno graph. Something is wrong.
That k&n intake is dying after 5.5k rpms. Your air/fuel takes a dive then. The Apexi took care of that. But I would look for another intake.
The A/F line should be in the 12.5 - 13.0 range. Yours is in the 14 range like mine. You are running lean beyond the control of the Apexi, or at least that what it looks like. I am going to larger injectors to compensate for my leaness.
Was the a/f monitor the tail pipe type? If so, do you have cats? The cats will give you an incorrect reading, because the cats scrub off the fuel.
Your superchip did not raise the redline, curious???
FWIW, my Contour Non-svt dynoed at 160hp 157tq with $300 of mods.
I would be concerned, if not disappointed.
my .02
