So my new 6er is runnin a little hot and thats why i probably failed emissions, cause it was close... but when I was cleaning her up I found in the glovebox a bag w/ some papers & a little plastic box, on it a nice shiney Dinan sticker, and the stock Eprom inside... ooooo I got a Dinan Chip!!!

Should I stick the stock back in for Emissions testing? Remember I am in MA so it's tough...