I have just finshed installing my catback, and with Dinan CAI, AMD program, 15% pulley, IK22, now I have noticed a big improvement in low and medium range rev but the top range seems to lack power in high range rev, not saying I lost top end power but only thet the car seems to be pushing less harder in top rev compared stock exhaust. Does anyone knows if it is lacking fuel in top rev? will bigger injectors can solve that problem?

 

I doubt your going to see any benefits by using larger injectors with those mods.

 

New head, ported, polished, new cam, etc....