I've been hearing a lot about this, been searching.

What does this mod do? How much performance does it enhance?

 

Basically the spacer lifts the top of the plenum higher allowing more (better) airflow to the front two cylinders of the engine. It's been stated quite a bit, how the stock plenum is angled down going to the front of the engine resulting in less air getting to those front two cylinders. With the spacer or replacement plenum, you increase the flow of air and add more horsepower (I think 10-14 on average?). It's a great mod, and the spacer costs a lot less than the replcements with almost the same results. I have a Kinetix plenum and coupled with the other mods on my G, I have great results. I'm sure someone else can explain better, but I thought I'd give it a try.

Later,
Ray

 

Do yourself a favor and search the threads. It helps the engine breathe better (grade school explanation). I felt quite a bit of punch from about 4k rpm to redline. There's lots of posts on this in addition to some good reading (if you like drama).

 

did search, ...maybe not for the right keyword though.

believe me I use it before posting questions

 

I hope that didn't come off too rough. Depending on the time, it can get a little heated when posts are rehashed. I'm serious about searching the plenum spacer....there is some extremely interesting reading.

 

Nah man don't even worry about it. It's cool...I don't get butthurt easily. I'll search a bit more and inform myself...thanks though.

-Edgar

 

search for Motordyne

 

you can start reading this thread:

https://g35driver.com/forums/reviews/43639-motordyne-plenum-spacer-discussion-dyno-info.html

 

Thanks for your help man.

 

glad to help....if you want more info here is his website:

http://www.motordyneengineering.com/

 

For the record - it is a sweet and easy mod

I think you are in SoCal.... so if you are not apt to do the install, you could easily arrange to have one of the many friendly SoCal Owners do it for you.

 

Unless i missed it in the researching I've been doing. Will this spacer fit fine in the '05 Sedan? I know it fits in the Coupe.

 

yep - no difference. fits and works well

 

Where can you get them? Is there a certain brand that is better than others?

 

try

www.motordyneengineering.com