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Proper intake filter length

04CompG

04CompG

New member
Well I've decided to go with the Cold Air Inductions, Inc. intake found here

This one comes with a 9" K&N cone intake which I am choosing not to buy. Instead I will be replacing it with an Amsoil filter. I'm against K&N usage of oiled filters (lets not fight about it).

My question is, on the zzp site their Wizair comes with a 4" K&N as an option. Should I go with a 4" or 9" filter? Why?

Thanks.
 


Good choice on the filter. I use their filters, fluids, the works in all my vehicles.

The advantage of a 9" over a 4" as I see it is more surface area in which to pull air through. Theres also more area to trap dirt before the filter loads up and restrictions occur. I would personally use the largest filter you can get away with. Something like EaAU4090 should probably do the trick depending on what size flange they use. There's even a 9.5", EaAU4095, if that would fit in there.

I guess the big advantage of a larger filter would be a lower pressure drop since there is more surface are in which to pull air through. Other than those I cannot think of any other reasons at the moment.
 
You're measurements are of two different values. They come with the same filter.

The WizAired comes with a 9" long filter with a 4" opening (that's what they mean by a 4" filter). The CAI box comes with a 9" long filter and is probably the same 4" wide in the opening.
 
Sabrewings said:
You're measurements are of two different values. They come with the same filter.

The WizAired comes with a 9" long filter with a 4" opening (that's what they mean by a 4" filter). The CAI box comes with a 9" long filter and is probably the same 4" wide in the opening.
Click to expand...

x2, you want a 4"x9" cone. 4" diameter opening, and 9" long. I have an AEM Dry Flow myself and I love it. Well at least as much as a man can love an air filter. :th_jester: I am a part of the anti K&N club too. At least when it comes to their air filters anyway. I like their oil filters.
 
Hi sorry to post on here but i'm new to this sire and i dont know how to post a question, but my question is, i have a 2005 GP GTP and i can not find parts for it, all the sites i've tried only have parts for the 97-3 GTP and if there are any parts for my car the are little add ons like a cold air or a cat back but thats reallt it and i already tried zzp and they only had a few things, dose anyone know where i can get some parts?

plz reply on here or e-mail me at [email protected]
thank you very much :)
 
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