2007Mazda3i

I have put K&N filter in my stock breather, a 60 mm throttle body in place of my stock 55 mm throttle body and a custom 2 1/2-inch cat back exhaust system in my 07 Mazda 3i. Would bigger fuel injectors make it run any better? I have a set of fuel injectors off a 2010 2.5 I can put in it.

Thank you for your time.