Emissions failed,hoping to see if someone knows why if I were to put down the results

[MavsFan214]

Thanks for anybody who's able to reply.

25/25 Test

Reading allowed

HC ppm 245 167 (failed)
CO % .72 .94 (passed)
NOx ppm 3060 1240 (failed)
CO+CO2% 14.6 6.0



I can post the 50/15 if needed as well.