K&N or AEM Intakes...which is better? - Jeep Commander Forums: Jeep Commander Forum
Intakes Questions or advice about intakes? This is the place...

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post #1 of 32 (permalink) Old 02-01-2007, 07:13 PM Thread Starter
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K&N or AEM Intakes...which is better?

I want to purchase an intake, either the K&N or the AEM for the 4.7 engine. The AEM uses their dryflow filters. Is this as free flowing as the K&N oiled gauze or no? What are drawbacks if any to either system?

Last edited by Tureg; 02-01-2007 at 07:15 PM.
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post #2 of 32 (permalink) Old 02-01-2007, 07:58 PM
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Re: K&N or AEM Intakes...which is better?

Not sure, I'm looking at a drop-in K&N filter for my 4.7 V8. I'll be very interested to see the responses you get to this question. The results I've had with a drop-in for my wife's '06 Suburban with the 5.3 V8 have been nothing short of phenomenal; upper RPM performance power and rev-out made it seem like a different engine, while the throttle response was a bit more crisp. The JC 4.7 feels like it's severely choked off in stock form and would benefit at least as well as my wife's Suburban did with just a drop-in replacement filter.

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post #3 of 32 (permalink) Old 02-01-2007, 10:36 PM
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Re: K&N or AEM Intakes...which is better?

I am going to upgrade to the AEM Brute force cold air intake system as I think it has a nice look to it and it has more horsepower and torque gain than the K&N. I will post pics of it as I do it. I also plan on upgrading to the hypertech chip programmer and the Borla exhaust. By my calculations, I will gain 39 horsepower with a gain of 58 foot pounds of torque with those modifications. Again, I will post pics as I do each one.

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post #4 of 32 (permalink) Old 02-01-2007, 10:42 PM
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Re: K&N or AEM Intakes...which is better?

It seems everyone has a different perspective on this. When I had a grand prix, everyone complained that the K&N oil would get on the MAF sensor. But when I had the Dodge ram, alot of people liked the K&N. It is probably just a personal preference, I have the drop in K&N, but I have the V6 and thats about my only option for now, or I would have something different.....

On another note, since the dry flow filter has come out, it does seem like a good idea?!?!

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post #5 of 32 (permalink) Old 02-02-2007, 05:08 AM
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Re: K&N or AEM Intakes...which is better?

From my experience with the Nissan VQ engine ('02 Maxima and '05 G35x) and VQ owner's boards that the issue with oil on the MAF never occurred out of the box, only after the filter was cleaned and re-oiled; in other words it was most likely user error.

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post #6 of 32 (permalink) Old 02-02-2007, 09:50 AM
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Re: K&N or AEM Intakes...which is better?

I really prefer the AIRRAID system, it seems to flow (on paper) as well as the K&M, but has filtration better than the other oil/gauze filters.

I wont use K&N unless it is for the track/race, they let too much stuff through. Not a theory, but personal observation and experience over the last 15 years on motorcycles.

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post #7 of 32 (permalink) Old 02-02-2007, 12:04 PM
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Re: K&N or AEM Intakes...which is better?

I like the K&N. Good improvements with that alone.
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post #8 of 32 (permalink) Old 02-02-2007, 12:15 PM
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Re: K&N or AEM Intakes...which is better?

Has anyone put these on the 5.7 and do you have to remove and leave off the factory cover? I am trying to deceide which to put on mine.





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post #9 of 32 (permalink) Old 02-02-2007, 12:34 PM
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Re: K&N or AEM Intakes...which is better?

I put the K&N 63 on my 5.7. You keep the engine cover but remove the airbox thing right in front of the cover. It's really easy to do and improves throttle response a lot. I'm not sure I can tell much power improvement and it's shockingly loud at WOT.
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post #10 of 32 (permalink) Old 02-02-2007, 06:30 PM
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Re: K&N or AEM Intakes...which is better?

Quote:
Originally Posted by Bulldog9
I really prefer the AIRRAID system, it seems to flow (on paper) as well as the K&M, but has filtration better than the other oil/gauze filters.

I wont use K&N unless it is for the track/race, they let too much stuff through. Not a theory, but personal observation and experience over the last 15 years on motorcycles.
Elaborate on that please. I understand the concern about filtration on a motorcycle with such tight tolerances (which is why I never changed from the stock filter even though I always put on a new exhaust and re-jetted my bikes), but on a Dodge V8 that's less high-strung I wonder if that concern is warranted to that extent.

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