I just went through my second test today, the first one was Saturday, both failed with the following results: Saturday's results: 15 MPH Limit Reading Result HC 72 155 Fail CO 0.29 1.57 Fail NO 947 482 Pass 25 MPH Limit Reading Result HC 132 169 Fail CO .042 2.44 Fail NO 921 356 Pass Today's results: 15 MPH Limit Reading Result HC 72 166 Fail CO 0.29 1.58 Fail NO 947 410 Pass 25 MPH Limit Reading Result HC 132 181 Fail CO .042 2.33 Fail NO 921 333 Pass The mechanics said it was due to the high octane racing gas I put in at Budds Creek this summer. I don't run the car much and I could smell the high octane in the exhaust (I actually kinda like that smell). They recommended that I run it down and put in fresh gas. So, Saturday, I put in one can of GTP and one can of SeaFoam with the little remaining gas in the tank, less than 1/4 tank. I ran that low and filled the tank with 89 octane. I turned the FP down as far as it would go. I ran it for another 15 miles or so and took it in today. You see the results above. I have until the end of the month to register the car. I would like to get it to pass without having to get a 30 day temp. They told me to run a few more tanks of fuel through to get whatever was in the tank out and have it re-tested. I would appreciate any advice you all can offer.