Wrong. Only plenum mods for rev-up that make power in the midrange..mainley tork is the MREV2 (modified DE lower plenum) and the 5/16 spacer used together.

Putting the spacer on by itself has Zero performance benefits on the Rev-Up motor, MREV2 and spacer MUST be used together .

The Rev-Up Plenum has runners tuned for topend Hp. The DE lower plenum has long runners tuned for more low end tork. Putting on a DE lower plenum will robb you of HP and add no tork.

Please guys read this link and all your questions will be answered. The 350Z is a VERY pickey car when it comes to mods. There is really no NA bolt-ons that are going to get u more REAL power, they will mainley only Free-up the power u already have and make the car run like a 300hp car should. With full boltons you will be lucky to see a 25hp difference. Getting the car ReFlashed is probably the most performance increasing mod that can be done to the car. Little things such as 100% throttle below 30mph will be allowed. Nissan programmed alot of the throttle restrictions so the car would be safe for a old lady to drive. A RWD car with 300Hp and almost matching tork can kill. People arent aware that there basically buying a smaller Corvette.

heres a link to the Top 100 questions.... http://my350z.com/forum/2003-2008-ni...questions.html

Also heres some other good reading.

http://my350z.com/forum/new-owners/1...ns-your-z.html