im not really sure on this whole getting more power thing but if i was interested in putting bolt on in what should i look for i have a 2011 5.3l v8 with DOD. I have a intake and a cat back corsa exhaust right now just trying to c what i can do that not to crazy but will give my car a little more before i tune it

 

Just the tune. You'll be shocked at how much the factory has left on the table.

 

cut the cat out under the passenger door, underdrive pulley, headers?

 

No need to cut it just gut it. It's a piece of cake to port and polish in place.

 

Turbos bolt on

 

what will the underdrive pulley do