I just bought a 2005 G35 Coupe. I'm thinking of installing either pop charger or cold intake. wanted to know which one is better. can you someone give some advice?

what kinda of intake, and wat kind of charger. intake only gives ten unless change ecu and throttle body or sensor, or add chip. the pop charger, the electric air pump? is kinda cheap, unless u get a nice one, it will giv u a little mor than intake, but i dont recommend, they hav problems,