Pontiac Grand Prix Forums : Grandprix

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.

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Scotty Hall
2001 Pontiac Grand Prix GTP
It whines a lot, but I like it.

The only place success comes before work is in the dictionary.

Great spirits have always found violent opposition from mediocre minds.

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.

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2004 Impala LS - got some mods sold!!!
2009 Subaru Impreza WRX STI

NAIOA moderator Still Imp'n, just in a different Imp.

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. 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.

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.: 1998 GTP : 3.5 : PT : 1.9s : Intake : DP : Plog : 180* : 605s : UD WPP : STBs : 12" Brakes :.

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 p_youdontneedtoknow@yahoo.com
thank you very much