I recently got a set of 450cc DSM injectors for my 91 tegra LS. At the tip of the injector one of the caps broke off on the end where it sprays. I wasnt sure how big of a deal it was, and my brother was helping me install them and said i should just go ahead and start it and see how it sounded. Well i started it, it ran fine. I took it for a test drive really slowly. It was sputtering some so i shut it off right away. My question is, is the reason its sputtering some because that cap broke off? OR Is it because i need to increase the fuel flow through them? Im about to put my turbo set up on my car. And i have a fuel pump im yet to install. I also have a Apexi AFC-II installed. So any help on that would be great. Thanks alot.