My car passes the NC tailpipe test every year, because I put in the stock chip, and turn down the fuel pressure. My street chip is a Thrasher, with the open loop idle, don't think it would pass. But it seems to me that a performance street chip SHOULD pass emissions testing. Why can't I have a chip for pump gas that is like the stock chip for idle, and for low rpm operations like the emissions test, but increases boost and fuel at WOT? Emissions tests don't involve WOT, so that shouldn't be a problem. Car has a high flow cat, which gets me past the testing and doesn't seem too restrictive on the street.