I want to get some long tube headers, a cold air intake and a new throttle body. After everything is installed will I need to get a tune? I know these engines run rich from the factory but I’m not sure if it could handle all that without a tune.

 

CAI and TB won't do anything. You should be fine with long tubes and a heated o2.

 

a new throttle body and air intake wouldn’t do anything? What does the heated o2 do?

 

Not on an otherwise stock motor, those are just easily accessible mods to make people feel like car enthusiasts when they'd be better off doing unglamorous maintenance jobs. Heated o2 fixes the problem you create with long tubes o2 location being colder than stock.

 

Where can I find the right heated o2?

 

Acdelco afs74 and pigtail