Originally Posted by KeithF

Hello all,

I recently installed stillen CAI on my z, it ran beautifully! but after 50 miles I get a CEL. I decided to buy some MAF cleaner and do my diligence, I reset the ECU again. It ran beautifully again! another 50 or so miles the CEL pops up again and idles at 1k and runs like a limp donkey half the time. This time I run a scan and I get P0174 for bank 2. I clean the MAFs again, reset the ecu, and spray some maf cleaner to see if I can detect any vacuum leaks. I couldn't find any leaks, and after the reset it runs beautifully again. Here we are another 50 miles later and the CEL is on, idling at 1k, and wondering if I made a mistake by putting the CAI on after the muffler delete and wondering if I absolutely need a tune. Any ideas?

thanks,
Keith