why the 5/16" and not the 1/2" just price difference?

 

In theory, the 1/2" spacer is supposed to help more in the higher rpm's, while the 5/16" helps down low. Since our engines get the the majority of their power above 4,500, most people try to get more power in the lower rpm range since its more practical for a daily driver. And the smaller spacer allows more options when it comes to strut bars.

IMO either one will work fine.

Ebay, marketplace, junk yard...
Later model G35's and G37's have the 3.7FD.

 

thx man. that helped

 

i've read that the 1/2" spacer is the same as the 5/16" on lower rps but more efficient in higher rpms

 

was it a reliable source or you just remember reading it somewhere?

 

i've read it from some other members here on the site. The only reason i'm still gonna get the 5/16" is cuz i wanna keep the engine cover and add a strut bar. Your best bet is to talk to somebody from motordyne and ask them

EDIT i just found this maybe this can help
https://g35driver.com/forums/engine-...-16-1-2-a.html

 

yeah i'll ask man, thx though

 

My Kinetix HFC's have recently gone bad and am looking for some new ones. I want to try something different this time. Whatever I get needs to be able to pass smog tests; I've read that Stillen's won't. Berk is a popular set and am leaning towards them right now. Any suggestions/comments?

 

I ran fast intention HFC for around 8000 miles before I came over to the dark side, couldnt have been more happy with them

 

An alternative would be to just run test pipes and swap in your OEM cats to pass emissions once a year...

 

I forgot about them
I may just do this, I've been really tempted to get the ART pipes. But my car is already pretty loud, don't know if I want it any louder with test pipes.

Thanks for the help

 

do you guys recommend installing spacers ourself?

 

^I'm assuming your talking about plenum spacers. Yes, they are easy to install.

 

Hey guys new to the forums,

Just bought a grey 2004 g35 coupe, What should I get first... love hp but want it to look good too.

More money will be coming in so some mods can be delayed for another month
Thanks in advanced

 

^ not to be a dick, but I don't get it. You post on a thread with 70 pages of what mods people get, asking what mods you should get. Did you even bother to read anything? Lol

btw welcome