300ZX (Z31) Forums Dedicated to 84-89 ZCars otherwize known as the Z31's

Who upgraded their Air intake?

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Old Dec 15, 2015 | 06:06 PM
  #1  
Donn144's Avatar
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Who upgraded their Air intake?

Just wondering if you actually see performance\gas mileage difference.
Is it worth it?

I am driving an 87 stock NA

Thx
Old Dec 15, 2015 | 07:07 PM
  #2  
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My 85 N/A had a CAI when I got it. But it used a off-brand dirty filter.
Once I changed the filter though, my mileage did go up a little, and you feel slightly more low end torque.
Old Dec 15, 2015 | 07:35 PM
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Thx for the info..Does a K&N change the sound? Make it a little more rough sounding?
Old Dec 15, 2015 | 08:32 PM
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no but it is kewl. seat of the pants dyno my son said my 83 zx was faster after the K&N but I don't know.
Old Dec 16, 2015 | 02:43 PM
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thx!
Old Dec 17, 2015 | 04:45 PM
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I used a Specter filter, mostly it's based on the size of your filter. Even with the smaller filter, if you give my car a good rev and immediately let off, you get a...almost blow-off valve sound.
Old Dec 17, 2015 | 10:13 PM
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Cool! Thx!
Old Dec 18, 2015 | 04:59 PM
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For the turbo like my 86 pitching the stock cleaner over a 2x size gives a noticeable HP improvement heck my 91 2 l has 3times the size of the 300zx
Old Dec 28, 2015 | 02:38 PM
  #9  
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Air Intake Upgrade

This is what I used on my 86 NA. Sorry, but I have not driven enough before the mod to notice any difference. It had been in a barn for 20+ yrs. & was not running at all. See attached pics.
Attached Thumbnails Who upgraded their Air intake?-img_0967.jpg   Who upgraded their Air intake?-img_0968.jpg  
Old Dec 30, 2015 | 11:42 AM
  #10  
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anyone have any problems with those getting wet and sucking water in the rain?
Old Jan 1, 2016 | 06:21 PM
  #11  
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Originally Posted by Desert Rat
anyone have any problems with those getting wet and sucking water in the rain?
Mine has never had any problem. It sits just above the bumper under the hood. The fan guard seems to protect it very well.
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