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Hey forum need some assistance from fellow skyline owners. I just installed an afc neo into my 95 r33 gts-t and all is working with it. Only prob is I put the ecu in diagnostic mode and I got either it was error code 12 or 21. I looked up the codes and 12 is for air flow meter and 21 is ignition signal. Now I have driven the car after the codes were detected and nothing seems wrong with it at all, in fact it feels more powerful and more responsive. I just wanted to know what would be the effects and/or signs if either one of those signals are correct?

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Ok I checked it again and the check engine light flashes 1 slow and 2 fast. This is error code 12 i think and a 12 is for air flow meter so what do I have to do to get rid of this code or what is the effect of this cause like i stated earlier the car runs great also the afc neo had to splice off the airflow signal could the ecu be picking that up and sending it as an error code also it isnt tuned as yet. So any and all help with this will be appreciated.

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