You don't even have to put the stock belt back on. Put the stock injectors back in, un-do whatever engine management you are running and you will pass. Just don't take the car above 4000 rpm (into boost) and you'll be fine. After passing, revert back!With the BBSC you can put the original belt back on and bypass the blower, put in your OEM injectors and you are good to go for emmisions.