no dont do anything to your motor ... leave alone until u jus buy another manifold .. for Ex: skunk2 ,aebs,jg so on and so forth . thats like me telling you to take your VC off and you will gain 1200 HP ... . wut he prolly meant was the butterfly valve vaccum (sp) line... if you do this you'll prolly have to get a Ecu that doesnt have the stuff inside that controls the butterfly valves in the intake ... which all in all ... A WASTE of Time .