would it be a bad idea to get a bigger MM throttle and bigger injectors on my stock 4.8l engine that has CAI and true duals?

 

It would be a waste of money unless you plan on doing major mods later. Your not going to max out your current TB so I can't see any reason to increase it. Same with the injectors. I'm just finally maxing my injectors out with mods in sig.

 

Geta a tune with that cash.