Chicken Wire Screen?
 

Someone brought up the issue about the "Chicken wire mesh" on another forum, and I thought I would point out a few things...

Do these OEM parts look like they're bullshit too?

Pic 1: 2002-2004 Nissan Maxima
Pic 2: 2000-2002 Infinity i30 (basically another Maxima)
Pic 3: 1998-2002 Volvo C70 (among others)

Discuss...

its used as an air straightener z32 300zx used it too. if your talking about adding it to our maf housing like PTP did its probably not beneficial

oh wow. do some searchin there are posts longer than the big rolls of toilet paper on this...and that's about all they are good for too. PTP was a huge proponent of this. afaik still is.

PeeTeePee claimed the material they used was from GM and used in their MAF housings..

either way... if its legit from GM or chicken wire from home depot it won't produce the benefits they claimed..

In the end John is still a douche.. the people who bougth this most likely got duped. And this stuff still hasn't been proved to make any difference on our platform.

Chicken wire only looks good in bumpers.

My intent wasn't to start a for/against PTP thread...

I just wanted to bring up a discussion about why OEM manufacturers use this type of airflow straightening mesh, and why the use of a similar mesh material would NOT be effective on our platforms.

After all, I'm sure the OEMs spent a shit-ton of money developing their intake systems, so why would they use a mesh straightener if it has no effect? It can't be to catch any stray material that slips past the air cleaner... so why would they use this?

It's been so long, I don't remember, but does anyone else know what our stock air intake looked like? did it have any type of airflow straightener in it?

I had the honeycomb mesh looking stuff OEM on my 2000 Pontiac GrandPrix GT. Some guys would take it out but then report a crappy idle. Also that it would "hunt" for the desired idle rpm. Basically the air was tumbling all around and wasn't metered right.

It definitely has an effect. I prefer mazda's way compared to the honeycomb. There looks to be less material to impede airflow while still getting the job done.

Yes the stock box does have a straightener in it. I believe it was molded into the plastic or something.



mazda

http://www.streetunit.com/v/vspfiles.../9-21070-2.jpg
http://www.suremotorsports.com/img/p...raightener.jpg


pontiac (GM)

http://www.gaownersclub.com/gallery/.../maf/maf10.jpg

Only one of those pictures shows a mesh before the MAF, two show plastic airflow straighteners.

I'd bet that the mesh is to achieve a more stable MAF output in very low flow situations... Not to correct for airflow issues due to improper MAF housings--which was the way PTP marketed their "product".

That makes sense. Hence why some of the Pontiac guys said it made their idle shitty when they took it out.

Why do you need this?

1. Smooths the turbulent air that feeds the MAF on the Speed cars.
2. Adds a noticeable gain in idle quality.
3. There is a felt gain in WHP.
4. Its affordable and seems to help with the MPG that you car
uses, should pay for itself over time.
5. Its a mod that anyone could do, so have fun.

http://www.pt-performance.com/images...38f6794ab8.jpg

*cough* *cough*

you hit the nail on the head....oem manufacturers spend a lot of time developing their intake....so why then would you want to put it on their if it doesnt come with it stock? use the design mazda intended..im sure most modern designs have strayed away from the mesh

I'm guessing that it would have helped the original mazdaspeed CAI that didn't have a straightener... lol
I'll have to find my stock intake and see what Mazda used... I don't remember there being an air straightener in there, but maybe there is lol...

Edit: There are lots of things that Mazda (and other manufacturers too) did that aren't necessarily the best way of doing things... like PCV system? lol...

^haha true...pcv system is a good idea...just needs to be better designed

straightner below
http://img138.imageshack.us/img138/7913/sam0584f.jpg

That screen would only really help during low load conditions and our factory maf is different as far as how it gets its air sample. Instead of having the hot needle exposed at the top to take its sample,then after it passes over exits thru the bottom of the sample tube. The Denso meter enters thru the bottom thru a sample tube it travels up the sample tube over the hot needle then hack out. With that sample tube design on the factory one if the air flow straigtener wasn't used it would not read correctly due to the orientation of the sample tube of like a venturi effect. Since the got needle is exposed on most of the other ones an elaborate straigtener is not needed. As far as gm goes I don't think fury even operate on a hot needle system they work on cold wire principle so the whole sensor is exposed and it operates of frequency I believe so I don't think much more would be needed for that to read correctly. Hope that helps.

WAT? lol... thanks kevin!

thanks for the pic! I never noticed the straightener before... soon as I took my stock airbox off, it went into the storage shed never to be seen again lol...

anyone u chicken wire for the exhaust?? to make sure it goes out str8

I put it in my under pants to filter out the lumps in my farts.

lol, I know. Sorry it wasn't shorter.

I was one of the suckers who decided to try PTP's placebo mesh. I had it in for a while and then took it out, put it back in, took it out. I never felt much of a difference in the way the car ran. Finally, a few weeks ago, I decided to check out my g/s mass air flow with it in and then out using the AP. On average, I peaked about 5-6 g/s more with the mesh removed with relatively close intake temperatures, so from my testing, the mesh is a restriction more than anything. Needless to say, I took it back out, for good.

With your Cobb SRI, you wouldn't notice anything because the Cobb intake already has air straighteners built in. If you have another brand of SRI or CAI without them, you can see an improvement in stability of the MAF voltage at idle and low RPM with the mesh. Without some sort of straightening going on, the air near the "wall" of the MAF will not move as well as the air in the center of the MAF, which can throw sampling rates off.

actually i put my chicken wire on a swivel right at the exhaust outlet and then tied that to my steering wheel. now i can drift like tanner foust. woot!