on my red r/t, i completely remove the egr system, EVAP canister/selonoid, cruise control, and a/c...it really cleaned up the engine compartment alot...but i did leave the PCV valve..i only put a breather on the valve cover vent that connected to the intake hose

 

I have a secret weapon getting prepped in the garage... lol slowly but surly...

 

Just think of what happens when too much pressure builds up and has nowhere to go