Well...installed a CAI from a REGULAR Mazda6 at the office today. 
Used only 1/2 the CAI kit and installed the filter...SRI w/PERFECT fitment + NO CEL for $39...
So...to recap:
Bought a Mazda6 CAI.
Used half the provided kit and fabbed it into a SRI.
Freed up some HP that was held hostage by restrictive stock air box.
No CEL.
Sounds like a devil incarnate now...you can hear the turbo spool & can fiiiiinally hear the ssqv blowing off.
Spent $39
I win.
Pics when I get off work.

Used only 1/2 the CAI kit and installed the filter...SRI w/PERFECT fitment + NO CEL for $39...
So...to recap:
Bought a Mazda6 CAI.
Used half the provided kit and fabbed it into a SRI.
Freed up some HP that was held hostage by restrictive stock air box.
No CEL.
Sounds like a devil incarnate now...you can hear the turbo spool & can fiiiiinally hear the ssqv blowing off.
Spent $39
I win.
Pics when I get off work.