One thing you should remember if you go N/A though...after spending like $3500-$5000 (all bolt-on stuffs, --assuming you buy everything new-- minus reflash and labor not included), you can only expect around 50 whp (that's being generous, I'd say 30-45 whp) ....so in term of performance, you shouldn't expect too much from N/A and I guess you already know this

PS: I think MREV is a spacer brand...M stands for Motordyne I believe...it doesn't come with G35... do you mean that when you bought your car, the spacer already installed in it?

 

as far as what i posted about my maxima, exhuast is a lilttle funny with vq's from what i noticed...maybe because i had an auto. But when i had my intake/ce-ypipe the car ran good...with a slight low end torque loss but the gain up high was there. Once i added the exhuast, my low end torque was completly gone and my car was all 60mph and up. Took off my ypipe becasue i wanted the looks of the exhuast more, and i regained that power.

After speaking to a tech at my store, he was telling me it was because of the loss of backpressure. These vq engines do require SOME backpressure.

 

I heard somewhere that the 03-04 cars actually used the same lower intake that Motordyne sells, they just modify it. That's what I meant by that my car already has one...Sorry for the confusion.