I swear I find more and more about my car everyday thanks to this site. I checked my DTC's on my aeroforce today, the SES light isnt on but I wanted to see if anything would come up. P0403 and P0405 came up. So I went to inspect my EGR. Low and behold it is not there and I see a blocking plate on my rear exhaust mani. So, I know the PCM was set to not report, otherwise I would not have passed previous inspections. But Im wondering why my aeroforce would show it and should I just clear those codes?