brand spankin' new evo III cat. A friends honda went from 260 ppm's down to 160 with a tune up...... Well the motor is stock other than a JimC chip, and the car failed emissions horribly. CO was almost 4 times the limit at 403 ppm. I just got the car so I'm not that familiar with it, but does anyone have any ideas for a simple fix? I hear other people passing emissions with the same JimC chip so I doubt it's that. Is there a mixture adjustment or something I can turn down temporarily for the test? The car runs great but it must be running too rich for the tests liking? Thanks for any help!