I have an 04 g35x and i have been doing some reading and was thinking about getting some stuff like a ztube, popcharger, plenum spacer,throttlebody spacer, and Mrev2,
However whats the deal with mrev2 and revup? if my car is an 04 do i have revup? if i dont and i get a mrev2 will it do anything to my car? Also i see people say that if i snows in your are to get iso thermal plenum spacer. Why is iso better than basic in cold and what would happen if it snowed and i had a basic spacer on?

 

you dont have revup ill tell you that much, the rest wait you will get the answern in a min

 

MRev will do nothing on your non revup.

You can Get the basic if you want, but the spacers keep your upper and lower plenums running cooler, thus lowering intake temps.