From all the intake manifolds which 1 gives PROVEN RESULTS the most HP gain in NA ? I don't consider ITB to be a choice.

 

You're user name is "tomuchboost" and you want to know what intake manifold gives proven NA gains?

Check Motordyne spacer. What year/engine is your G?

 

Most people don't realize that a NA engine already receives ~~14.7 PSI boost from earth's atmosphere. At WOT there is a little less than 1.0 psi restriction so 13.9 PSI [corrected for barometric pressure variance] is more accurate.

 

It's not "boost" if its atmospheric pressure at sea level....The term "boost" implies that there is added pressure on top of regular atmospheric pressure...

 

The motordyne spacers (5/16") are the most commonly used spacer. The Kinetix has the best gains (the SSV) but they aren't worth the cost unless you go FI. Kinetix V+ plenum is a good choice. I went with the BLOX, which is a 5/8" spacer.

 

Yes, it's easier for me to keep my username for both here and supraforums and the username is for my supra :P

Anyways

I got a 2004 g35, non revup. I did review the motordye and I know it works just I'm looking for a manifold for show and I don't want a no go show item :P

And boost will follow soon

 

if boost will follow, no reason to get any spacer/manifold now then. Unless its a cosworth becuase people are making well over 600 without them.