Who you callin' a kid?

 

eh, true I guess.

I would stick with the Stillen Hi-Flow "CAI" with a Z-Tube

 

Don't we already have a CAI stock? With the hood closed, the intake pulls in air from just behind the front grill, facing forward. So I suppose it could technically be considered a ram air intake. Stillen and JWT both use a similar design as stock, with some variances of course. AEM and Injen are true CAIs as long as you're using them with the full tube extension.

Personally, I think K&N panel filter/Z tube and JWT/Z tube are the two best, since they use the same stock intake duct with the added benefit of a freer flowing filter and smoother intake tube. Stillen seems to be unnecessarily loud (which some people may want). Injen and AEM seem overpriced and less efficient to me.

 

ebay FTW























yes, I'm being very serious.

 

Ding ding!!! We have winner. People automatically assume since it's a stock intake, it must be restrictive. That couldn't be farther from the truth with the g/Z intake.

 

Please provide your test results that confirm your statement. I guess in your world the G35 and 350Z intakes are identical.

 

1. Injen
2. Stillen
3. Nismo

999. AEM

 

So by your rational I would have to test the "Tornado" or "Turbonator" to verify it doesn't work

Stillen CAI vs Z-tube/K&N = no gains
https://g35driver.com/forums/reviews/73734-dyno-d-stillen-hi-flow-airbox.html

As for the stock Z intake and G35 intake, the only differences lie in the intake pipe and the larger primary opening of the 350Z. Add a Z-pipe and remove the Powerduct on the G35 intake and you basically have the same setup as the Z.

 

Affirmative.

 

One uncontrolled dyno out of MANY that got gains.

Stillen CAI with Z-Tube has proven to give gains.

AGain your posting misinformation as usual.

 

Cookies and Cream!!

 

+1

 

sorry cru, just a habit. most people on here are older than me anyway.

um...stock intake not being restrictive...have you looked at it? its common sense that a larger diameter pipe with a large filter will pull more air at a faster rate than a box with various openings and turns in it. the whole purpose of a stock intake is to draw air while being as quiet and non-invasive to the passengers. this does not help performance at all.

as for that dyno, he most likely installed the intake and ran right after the stock pull, not allowing for the ecu to adapt any.

 

I partially agree with you and partially disagree. The stock intake tube with it's resonator was designed to cut down on noise. However, just putting on a larger diameter pipe and larger filter does not ensure better performance. What is important is the having the right flow rate based on what the engine can take in and then remove. Adding a massive intake tube and massive exhaust system will likely hurt performance. If you can find the filter/intake/plenum/header/exhaust/etc. that works best for your application, then that's the most important factor. Stillen's CAI and JWT Popcharger both use the stock "ram air" intake (for lack of a better word) that sits just behind the grill, so maybe someone needs to design a better aftermarket part for that.

Part of the reason the Pop Charger, Stillen CAI and other similar intakes perform better on the dyno (generally), is because with the hood open, they now have a larger/more direct route for the engine to get it's air. I'm guessing that both of those intakes perform equal to or less than stock ducting with a performance replacement filter (ala K&N). The added area that the Stillen and JWT pulls it's air from with the hood closed is from within the engine compartment. Thus giving higher intake air temps, and less power.

And just to add my 2 cents as far as intake choices. During a G35 dyno day, my K&N/Z tube 04.5 AT sedan put down consistently better numbers than people with comperable cars with JWT/Z tube/ AND exhaust. So as far as I'm concerned, I'm happy with K&N/Z tube.

 

a larger diameter pipe with a large filter will pull more air at a faster rate than a box with various openings and turns in it.

Take an oem filter and disassemble it and iron it flat and measure the filter area in square do the same to K&N or other brands.........eat crow is the usual result. Oem filters have more pleat depth.

Pull in air ????.......the air is forced into the opening and thru the filter by the earth's supercharger with 14.7 psi of force. The earth's pressure forces it in to fill the cylinder back up to pressure..........the heated expanded gases forces the air [exhaust] out not really the piston.

The rings are set to compress primarily in the up stroke but 1500F exhaust has a lot more instantaneous pressure..........than any miniscule 10:1 CR ever will make.

Anyway oem CAI and a newish oem filter have less than 4.7-5.1" at 70F water column of resistance at 6900 rpm almost unmeasurable below 4,000 rpm.

At most 5.1/27.7=0.1841155 x 6.8%= ~1.25% max resistance at 70F .

Unfortunately aftermaket may be worse or equal or a little better........measure them to see what you have.
http://www.dwyer-inst.com/htdocs/pdf...e/2000_cat.pdf