I just got my emissions test yesterday and faild my HydroCarbons portion of the test. The emissions tech guy said to take out my Z06 mass air sensor and put the stock one back in. My car has 48000 miles on it, I dont have headers, I have a Flowmaster cat back, is there anything else I should do before I go back for my next test?? Thanx for all the imput!!!

My readings were:
HC/ 2.98 (the standard is 0.8)

Please help!

 

puting the stock MAF back would be a first step. what were the other readings?

 

All my other readings passed!