Hey Grudgee Engine light is a problem that sometimes occures after flash tune. If you have a custom tune take it back to your tuner so they can get rid of the light ,if a generic tune then you may have to put up with it. To check if it is in the tune ,flash it back to standard, start the engine and see if the light goes away if it is still there take it to a dealer to check that something is not wrong with your cat. Good luck PS may not start in standard mode with your bigger injectors so go back to the second tune and try