Just want to know if any one is running a plenum spacers on the 07-08 g35. If so, do you notice a difference in performance? I have an 08 sedan and if someone can just give more info that would be awesome of you.

 

2nd gen is a completely different plenum design
You can't add spacers.

 

Booooooo! If that's true, that's not fair

 

07+ plenums are plastic made 1pc and already made for max performance as the AM 1st gen G's

 

^WHS
The only reason that you need a spacer on a 1st gen is because the design wasn't very good.
Not the case with 2nd gen.

= money to spend on other mods

 

^WHS
The only reason that you need a spacer on a 1st gen is because the design wasn't very good.
Not the case with 2nd gen.

= money to spend on other mods

 

Motordyne sells a modified upper manifold to replace the OEM one. I'm not aware of anyone on here running one, but I'm sure some of the G37 (coupe) guys are running it.

EDIT: looks like the MD manifold is just for the VQ37HR.

 

^ very interesting i was near certain that same design was used for vhr and was very efficient, would be nice to see if the AM one actually has any advantages though.