After searching the forums, I am still missing something so, help me out here:

It is my understanding that the only difference between the Z's 287 HP and the G's 280 is the difference in the air intake with the z-tube. After looking at my G's stock intake tube, I can't understand where the 7 hp was being lost. There are no obstructions in the intake. It appears to be a clear path. Is it the extra turbulance from the resonator hole on the top of the tube and the moisture collector below? (I think that is what the two boxed are. )

What am I missing?

 

The Z-tube is smoother and a little straighter without the resonance chamber on the bottom.
The Z's extra hp is a result of more aggressive ECU settings, as well as a slightly better flowing intake & exhaust.

 

Amen!
gsedanman hit it right on the head

 

The carbon fiber driveshaft in the 350Z probably helps in reducing drive train loss.

 

where can i get a z-tube?

 

Try here.
http://www.performancenissanparts.co...3dcd28cc10d835

 

Our polished/chrome/carbon fiber Z tubes are on sale, for this week only.
Please visit the vendors classified for details.

UT's New Years Specials

Thanks

P.S. Our tube dynoed for 8-10hp. WOW!

Dyno details

 

on the z tube, are there any performance differences between the polished/chrome/carbon fiber? or is it just materials and appearance?

thanks

 

The (((stock))) Z Tube Is <<<only>>>> Rubber!!!!

 

"The (((stock))) Z Tube Is <<>>> Rubber!!!!"

And rightfully so, much better heat transfer properties (or lack thereof) as compared to steel or aluminum.