Finally I was able to install the ztube that I got from a buddy of mine on my 05. As for performance, personally I did not feel much but on the exhaust tone, all I have to say is WOW. This is what the car needed, a tougher exhaust tone. Next on the project list is to get the K&N dropin filter to replace the OEM one that is present.

I also went ahead and removed the resonator that is present on the stock airbox. What a pain in the #$$ to remove one of the screws. I did not notice much of an exhaust tone change here after removing it. I did leave the hole open since much more air can come up that way. Hmm, anyone ever thought of putting a ram air from the front bumper up to this hole? One of my only worries with this hole open is even though the stock airbox sits high, I wonder if any rain can sneek up that way? UR comments appreciated.

Thanks

If I were you I'd get a "Stillen High Flow Airbox" to complete the job. The sound will be awesome and the performance improved.

The sound is noticeable inside and outside the car. This is one of the best mods on my '05 Sedan.

I left the resonator hole open also..... I have no problems so far....

Your talking about that little tube that stems off the z-tube? Are you saying we don't need that? That was a pain in the *** to remove. I still don't think thats a very good idea. Dirt and water wouldn't have a hard time getting in there, but I always thought it was a part of something for the engine so I just reconnected it.

Can someone please show me where the resonator hole is?

If you take the stock airbox out, you'll see the lower resonator on the bottom of it. Easily removed.
C.

You wont get much from a ram air off of the little hole. Most air is coming from the long intake extender across the base of the engine bay. I forget what Nissan calls it but in any event the air coming from that and the "power duct" will far overcome anything you can ram into that little hole. I left mine open too and there is no way water will be a problem unless you drive through a puddle that reaches up to the power duct and engulfs it completely so that the engine injests only water.

Heeb to answer your question, I am talking about a resonator that connects to the bottom of the stock airbox. In order to get to it, you need to remove the stock airbox. Once the stock airbox is removed, you will see it screwed onto the chasis of the car. The tube that stems off the ztube, if not mistaken is the emission tube connection. Not sure why you had such a hard time to remove.

Chico and others, is there a huge improvement using the Stillen airbox and a K&N drop in filter? Does the stillen use a regular square shaped filter or a cone style filter?

Has anyone tried to install a regular cone filter directly to the MAF sensor without using a velocity stack? If so what were the results? Any info appreciated. Thanks

Isn't this what the JWT Popcharger is, or does that come with it's own velocity stack?

Comes with its own velocity stack.

The Stillen comes with its own cone filter as you see it in the pics. The K&N is not needed.

Prior to getting this I had the Z-Tube and K&N filter, so I know it made a difference in performance and sound.

The Z-Tube and Stillen intake work really well together. IMHO, it is worth every penny.

I disagree. It is a waste of money. Makes your car sound ricey. Loss of low end.

https://g35driver.com/forums/showthr...n+lower+grille

I have yet to see a INDEPENDANT dyno runs with before and after on the same day at the same dyno with the stillen intake.


ztube is all you need and it probably doesn't even do anything other than more sound. The K&N will not give you more power either.

Got any personal dynos to back that up?