Breezy

Oh, the ironing.

I put together a 6" velocity stack intake setup that can work on both NAs and NBs. You will need a Racing Beat intake elbow and a BPI 3.5" Flow Stack Kit & Compact Filter, which can be purchased here: http://www.bpinitiatives.com/filterkits.php#asm35601



First, remove the honeycomb screen found on the inlet of the MAF, which will give you a straight-through flow:



Install the Racing Beat kit without installing the supplied filter. Substitute it for the BPI Flow Stack Kit.

Done. You now have a bad-ass intake setup.

ScarfaceThe91

LostSoulMiata

Moved to DIY

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Techsalvager

The honeycomn screen is for just that, to make sure the reading of the airflow by the maf is correct. Removing it is a bad idea.

dontpassthefence

... wat.

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2004 Ponyspeed Miata #2595 [SOLD!]
2013 Scion FR-S #500

Matt09

jesus.... THE MAN HAS GONE MAD!!!!

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Breezy

I did it on my previous car without any problems. It's not going back on.

Take the following from someone on the 300zxclub.com forums:

imnatelol

Higher boost and a leaner mix? Sounds legit

vejatabul

Mesh is a band-aide for a poor MAF design. Some cars need it more than others, due the the sensitivity of the particular MAF. People have been removing the mesh from Camaros and Trans Ams since 1985, when they introduced the MAF on the f-body. I have seen it cause slightly erratic a/f ratios, but this is highly vehicle specific. People once believed that it was simply a screen to prevent damage to the MAF. Personally, if the car makes more power with it removed, and you feel it is a worthwhile increase, then by all means, remove it. The chance of you actually hurting anything is severely slim.

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vejatabul

Perhaps their cars run a bit too rich in factory form, much like the NA Miata.

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Techsalvager

Yes if you have a tuneable ecu that you can adjust the airflow to voltage curve due to changes to the MAF sensor.
With a non tuneable ecu that you can't change the airflow to voltage curve its just a bad idea, the honeycomb is relied on to keep the airflow over the maf sensor correct, removing it and placing the maf in airflow thats not straight right infront can easily skew readings. Who knows if its reading more or less now. The sensor itself only samples a small bit of flow area.

Already seen where placing a 90 degree elbow right infront of a descreened housing threw fuel and spark calucations off.

the mesh is used to keep laminar flow though the maf housing

ScarfaceThe91

As long as you have the filter installed there shouldn't be anything large enough to cause damage to it. If you're running with the filter off and say you suck a bird into your intake then I'd say there's a chance of the sensor getting damaged, though even still not likely.

vejatabul

Can you provide quantitative data to support your statements, or it is simply based on hearsay? Perhaps you have some legitimate information, but without a way to quantify it, it certainly cannot be relied upon.

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robr

Not for nothing, but 300zxclub is the LAST place you want to get tech advice from, especially for a tt Z.

If you want to discuss the Z's MAF screen: "The sensor element is a wind speed senor that happens to scale with air density. When the flow is straight and columnated a mass flow is easily calculated. However if the flow has a swirl to it, the rotational component adds to the airspeed. This causes the sensor to over-report mass flow. My guess is that when air is forced in from one side, the imbalance creates a vortex/swirling that has that effect. The screens are there for this very reason... they help to columnate the flow to improve accuracy. I don't expect there to be very much of a pressure drop across the screen... it would likely more than pay for itself with the improved accuracy and repeatability."



That was from the guy (actual engineer) that created the new hotshit dual MAF translator for those cars.

robr

I am a Z guy. I know Zs. I now own a Miata. 300zxclub is 100% a complete joke for various reasons, the "tech advice" being the main reason.

Try to discredit what I'm saying or not, but it has been proven time and time again that removing the 300zx MAF screens (there's actually 2 - one in front of the wire, and one behind it, and they are actual screens, not the big plastic grid like the one in this thread) does NOT increase power at all. It does NOT increase air flow. Does it hurt anything? Not anything unless you count proper repeatable MAF readings, which everyone will admit are insignificant at best. Moral: if it's torn and beat up, remove it and you will probably never notice the difference; but there's no good reason to remove it otherwise.


On a Miata? I would say the same as you: if you think it helps, and you're OK with removing it, have at it.

dontpassthefence

that air filter is likewise an airflow restriction, toss it. The elbow sucks too, needs more 90deg right off the throttle body with a fatty dry carbon velo stack

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2013 Scion FR-S #500

stormin'norman

"On the 300ZX if you do the mesh removal, you will increase air volume from 300cfm to about 700cfm. It will increase your boost and your response, and will get rid of most of your hesitation problems...... oh, and it should lean her out a bit too, good for those of you with high boost.
And I've seen articles where LS1's are being dyno tuned with the mesh removed."

Lol at 400 cfm gain. Right..

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robr

That is the info that I was saying was 100% laughably (and proven) incorrect. But apparently my claim of falseness is incorrect because I don't post on 300zxclub.com...which with info like that, most people can understand why.

And to make it known once again, the 300zx MAF screens are screens, not thick plastic honeycomb kind of things like the one posted in this thread. They are quite comparable to a house window screen. Just block 400 cfm of air flow apparently.