it and allow it to open. I don't think the ECU monitors them in anyway. I'm going to give you some advice though, if you're going to replace the injectors don't go the cheap route and get some remanufactured crap or you'll be removing the plenum again in a month or so (ask me how I know...). Just spend the little extra and get something new with a warranty. Nismo is the preferred brand. Good luck.