So, I've been having a Lean code on my engine for a long time already that I couldn't figure out. Took it to Ford, they say it's bank 1 right side, and that it's the manifold and O-Rings on my fuel injectors ($1,700). Cool, now I know what's wrong, I might as well change up! I got the Ford Racing Manifold, and of course now I need the 62mm Throttle body, fine. but as for fuel injectors, should I upgrade as well, or stick with OEM? And if I upgrade, which amount of poundage should I do or does it not matter? Any suggestions?