I am sure many people who reads this g35driver forum also reads my350z forum as well. I have notice that many people here (g35driver forum)favor the Motordyne plenum spacer, and over in the (my350z forum) members favor the AAM Spec Angled Plenum Spacer. I have made this conclusion because there isnt a discussion about the AAM Spec Angled Plenum Spacer at all in G35driver forum and vice versa in my350z forum. Why is that? IMHO these two are great products and they are very similiar therefore they are direct competitors. And I am surpise that there arent and discussions about AAM Spec Angled Plenum Spacer vs Motordyne plenum spacer.

AAM Spec Angled Plenum Spacer:
Web site: http://www.alteredatmosphere.com/350z_1.asp
its an angled spacer
claims 10hp
remains factory look
Price: $249

Motordyne plenum spacer
Web site: http://www.motordyneengineering.com/
Flat spacer
claims 5~10+hp
offer in different sizes with different prices: 1/4" ($195) , 3/8" ($215), 1/2" ($245)


So which spacer do you guys think is better in performace wise? Since the prices are about the same we do not have to worry about that too much. Even thou they are both spacers the design and idea involved is very differnt. AAM uses the angled one, claims that making the plenum flat will increase flow to the front cylinders which then increases HP. Motordyne just simply increase the height of the plenum by a flat spacer to increase hp. Im trying to make a decision to buy one of these...