AEM Brute Force Red/Gray filter question?
CF Veteran
Joined: Sep 2009
Posts: 1,092
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From: Chesapeake, Virginia
Year: 2002
Model: Grand Cherokee
Engine: 4.7
yeah its not dumb to have one, ive had one for like 2 years and it made a huge difference when i put it on, you need to get some weather stripping around the outside of the metal shield and it should help some
CF Veteran
Joined: Feb 2010
Posts: 3,353
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From: Missoula, MT
Year: 1999
Model: Cherokee
Engine: Golen 4.6 Stroker, AFE Headers, 62mm TB, 24 LB Injectors, Brown Dog kit, HF Cat, 3" Exhaust
hey man, why not put some vents or louvers or somehting in your hood where your intake is to get the cold air to it? they are fairly cheap and help you xj run cooler anyways
CF Veteran
Joined: Sep 2009
Posts: 1,092
Likes: 0
From: Chesapeake, Virginia
Year: 2002
Model: Grand Cherokee
Engine: 4.7
yeah you could do that, ive thought about that too but the other thing is with an intake if you do any water crossings its bad enough lol, you dont wanna make it even easier for water to get in there, unless you dont ever plan on doing any water crossings....then go for it
I have the afe setup and know for a fact it does not draw in much 'hot' air.
How do I know this?
Well, intake air temp also affects engine temp. After I put the afe intake on it runs cooler and if you get on it you can actually see the engine temp go down a tad. I have no mech fan so that has nothing to do with it. The reason being the engine is now drawing cooler air from outside the engine compartment and this in turn cools the combustion chamber temps a tad.
How do I know this?
Well, intake air temp also affects engine temp. After I put the afe intake on it runs cooler and if you get on it you can actually see the engine temp go down a tad. I have no mech fan so that has nothing to do with it. The reason being the engine is now drawing cooler air from outside the engine compartment and this in turn cools the combustion chamber temps a tad.
Thread Starter
CF Veteran
Joined: Feb 2011
Posts: 1,838
Likes: 1
From: South Dakota
Year: 1992
Model: Cherokee
Engine: 4.0
hey man, why not put some vents or louvers or somehting in your hood where your intake is to get the cold air to it? they are fairly cheap and help you xj run cooler anyways
Last edited by Kyle 4x4 4life; Mar 28, 2011 at 12:36 PM.
CF Veteran
Joined: Sep 2010
Posts: 2,844
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From: Warsaw, IN
Year: 2000,1990,1999
Model: Cherokee
Engine: 4.0
Make some drip pans. Search, there's a couple threads on here about them.
Thread Starter
CF Veteran
Joined: Feb 2011
Posts: 1,838
Likes: 1
From: South Dakota
Year: 1992
Model: Cherokee
Engine: 4.0
Make some drip pans. Search, there's a couple threads on here about them.
Thread Starter
CF Veteran
Joined: Feb 2011
Posts: 1,838
Likes: 1
From: South Dakota
Year: 1992
Model: Cherokee
Engine: 4.0
Isn't the gray filter a dry flow filter?
CF Veteran
Joined: Mar 2009
Posts: 2,750
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From: Visalia, Kalifornia, ussa
Year: 1996
Model: Cherokee
Engine: 4.0
I didnt ask for a smart ***. I know the cold air intake on a xj is stupid, but i didnt know that until AFTER i had ordered it. Im new to jeeps and am learning the ins and outs slowly. And its not the color i care about its the type of filter...but anyway thanks a ton for your useful comment glad you took time out your day to look at my post and reply with an anwer that doesnt help me one bit....
Thread Starter
CF Veteran
Joined: Feb 2011
Posts: 1,838
Likes: 1
From: South Dakota
Year: 1992
Model: Cherokee
Engine: 4.0
Sorry for the sarcasm without explenation.. See the real waste is the air filter, AEM/K&N can be a good performance filter, good flow, BUT the dry types are also among the dirtiest on the market. If you are going to run a dry filter, run any old school paper type, they are cleaner, you will give up a little flow, but if that keep dirt out of my motor, OK. You want a High Flow Filter run an oiled filter with a sock, and clean it often.
CF Veteran
Joined: Sep 2010
Posts: 4,968
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From: Salt Lake City, UT
Year: 2000
Model: Cherokee
Engine: 4.0L
you can also get a "pre-filter" to help keep out sand and dust (the larger particles) so they don't clog up between the vanes of the filter. I know a lot of people who like them and say it makes it so they don't have to clean them as often. but i am skeptical to how much they really do...
google list of pre-filter

I have a K&N intake. got it for free. it makes it a little better, (more smooth heavy acceleration) i wouldn't say i got more power just made my power band feel more smooth.... IDk tons of people have opinions with no backing. and mine is just that lol
google list of pre-filter
I have a K&N intake. got it for free. it makes it a little better, (more smooth heavy acceleration) i wouldn't say i got more power just made my power band feel more smooth.... IDk tons of people have opinions with no backing. and mine is just that lol
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