Ok guys I need your help, I am used to working on American cars and have recently gotten a Honda and love it but I can not get it to pass colorado emissions.. It is failing at the HC PPM part of the test at idle. I have takent he test twice so far and the first time the reading was at 335 at idle and I replaced the plugs and wires and had it retested and now am at 237 I need to be below 220. What more can I do ????????? It has also recently had a oil change and new filters...... Whats left??