Check your EGR system for proper operation - my SR failed NOx one year due to a clogged EGR valve. I pulled off the valve and cleaned it, replaced all the EGR system vacuum lines, and passed emissions.

Definitely check your converter temps beforehand, although a bod converter should have you failing HC and CO as well as NOx.


95 Montero SR
3.8 MIVEC, Advance headers, 2 1/2" exhaust, Magnaflow muffler, OME shocks & rear springs, 2" body lift, 3" tank lift, 4.90s, TRE front locker, factory rear locker, Roger Brown Rock Sliderz, 315/75r16 (35") tires, Sport big brakes