Well the car is passing at the maximum limits. It has baffled the highly trained Acura technician for 3 days now. What was it? Don't know and neither does he...he has re-adjusted the valves cause he felt they were done too tight and has done an extensive carbon cleaning on the motor. I am now getting a new cat cause the tech. feels this will put me under where the car needs to be. And guess what? I get it for free!!! My car is covered up to 80k for emissions. I turned to Acura at 79,219 miles. Thank god!!! Cats are so $$$