Gday guys im trying to work out what bang for buck or pros and cons for plenum/intake side is the way to go Process west Nizpro cobra intake viper atomic plazmaman Are there any bad upgrades? or bad choices with these and what one works the best? There is not alot of info out there about people using these,I do see people who make these go on about how theres is the best,I personaly like to see people finding good resualts on these so I know I can too. Cheers.