So I decided to go back to my VQ35HR since I didn't gain much TQ from the headers..
I did a little bit or porting on this manifold awhile back.
Car definitely feels much better in the mid range notice a bit more power.
I'll leave this manifold on until I get a chance to go back down and get it Dyno'd


here are some pic of the manifold that I modified myself to fit!

 

From these pics, is your black PVC hose going to the MAP sensor instead of to the back on the upper manifold (where the red hose is in the pic).

Also, is that a M370 plenum? If so, it looks like the PVC hoses at the "T" connector are in a different configuration.

 

The hose is connected to the bottom of the inlet then to the map sensor..
It doesn't matter which way they are configure on the manifold..
The M370 is the VQ35HR manifold..its from the G35
Configuration does not matter all the are is hoses connected together

 

Sorry. the red hose going into the firewall... what purpose is it serving? (feeling like a noob asking that).

 

It's the vacuum source for the brake booster. It's also the favorite spot for most to tap in their vacuum block.

 

that is the brake booster hose same one the stock manifold has..mine is just upgraded to Z1 silicon hose
the stock G37 plenum only has one inlet while the G35 manifold has 2

https://www.z1motorsports.com/z1-pro...etskpcihh7sjk1

 

I'd like to see pics of the porting, anyone else?

 

unfortunately i never took pics of this manifold while i ported it..i only spent maybe 2 hours on it..after reading that Z1 was porting these and not getting much more power out of it i stopped

 

these are the pics i took of the stock Manifold i ported

 

Wow those are great! What did you use? Dremmel? The company I work for makes all the new Honda Civic nylon manifolds (including the type-r) and very interested to do this when I get my hands on one. Thanks for the help on this!

 

Dremel and lots of hand sanding..to finish up
i think i spent a total of 8 hours on this

 

i wish i had a trip to Cali planned soon but i dont..it will probably be a few months before i can make it back to the dyno..would like to compare the ported plenum numbers to the VQ35HR..

 

So the 3.5 has smaller head port and TB diameters? You matched them? I so have to do this.

 

the G35 manifold has longer runners compared to the G37
TB size is the same.i just ported for more airflow

 

I have to get me some and cut them both up.