so i threw a code 31 today and its idling horrible(AFM) this happened after i used a product by CRC called Mass Air Flow Sensor Cleaner, my MAF was pretty dirty and i would sometimes have starting problems to so i figured why not clean it. I followed the instructions to the dot, put the MAF back on and now i throw code 31. Should i take this up with someone or am i shit outta luck? buyer beware, dont use that stuff, i wouldnt ever trust it again.