K&N for WK2 - JeepForum.com

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post #1 of 28 Old 12-21-2010, 06:21 PM Thread Starter
darkrt
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K&N for WK2

For those who might be interested. K&N now has a drop in filter for the WK2. Part # 33-2457. Fits 5.7 and 3.6.

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post #2 of 28 Old 12-21-2010, 07:53 PM
getoutandplay
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Woohoo! Thanks!!!
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post #3 of 28 Old 12-23-2010, 06:21 AM
mchassler
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33-2457 - K&N Replacement Filters, Replacement Air Filter (5.7) $49.99. Just ordered mine.

2014 JKU Rubicon X
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post #4 of 28 Old 12-31-2010, 12:30 PM
getoutandplay
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Received and installed. One of the best and cheapest upgrades one can make.

Old:



New:



Comparison:

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post #5 of 28 Old 12-31-2010, 01:41 PM Thread Starter
darkrt
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Thanks for the pics. I've got one ordered. The wife wont let me mod her jeep, but I have the Challenger to play with. I just got the drop in for the convenience of having a cleanable filter. I dont expect much inprovement in anything, if any. Wanted exhaust and CAI, but she likes it quiet.

Last edited by darkrt; 01-04-2011 at 06:35 PM.
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post #6 of 28 Old 12-31-2010, 02:41 PM
CTO1
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Quote:
Originally Posted by getoutandplay View Post
Received and installed. One of the best and cheapest upgrades one can make.
Any change in performance? It certainly looks like more air is going to get through.
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post #7 of 28 Old 12-31-2010, 02:49 PM
getoutandplay
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I actually haven't driven it yet. Lazy day...

I bet quite a bit more air passes through but I am not sure it will be enough to tell a big difference.
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post #8 of 28 Old 12-31-2010, 03:10 PM Thread Starter
darkrt
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Intake and exhaust go hand and hand. An intake with a restrictive exhaust like on the WK2 is not going to see much gain over factory, if any. Correct me if I'm wrong.
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post #9 of 28 Old 12-31-2010, 08:12 PM
sost1sg
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Please let us know if any noticeable difference. Will order one if so.
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post #10 of 28 Old 01-01-2011, 08:45 PM
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You might get a couple of HP max. 2 HP out of 350 or so, won't even notice it.
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post #11 of 28 Old 01-01-2011, 09:41 PM
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I would think to really feel any noticeable difference you'd need a cold air intake, less restrictive exhaust and probably a bigger throttle body. Not to mention the new fly-by wire throttle on these things makes the repsonse feel somewhat restricted I find.
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post #12 of 28 Old 01-01-2011, 10:13 PM
JTS97Z28
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getoutandplay,
I dont think a K&N filter the cheapest and best upgrade one can make. Im not trying to be an a$$ or anything or make you feel bad about your purchase, but your taking out a OEM air filter with superior filtration capabilities compared to the K&N and putting in one that will make no noticeable difference in performance, allow more debris to enter, the hassle of having to clean and re-oil (which also tends to get on intake sensors if over oiled), costs more money etc etc.
Im not saying using a K&N will destroy your motor because that would just be stupid to say, but I dont see any real benefits of using one especially in a Grand Cherokee. Im not saying I have never used a K&N or some sort of cold air kit, but that was in my Corvettes and stuff like that. In a Jeep, I will take the one that filters better any day :-) To answer everyones question no you will not notice any increase in performance with a K&N, and if you do its your mind playing games on you because you spent $45+ on it!

ok im done being a negative nancy sorry long day at work haha.
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post #13 of 28 Old 01-01-2011, 11:45 PM
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It could help ever so slightly with gas mileage but no performance gains, however, this Hemi needs any help it can get with mpg's!!! Best I've seen is 18 mpg on a long highway trip. In previous cars I've seen up to 2 mpg improvement on highway commuting with the K&N.
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post #14 of 28 Old 01-02-2011, 12:17 AM
SPL170db
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Quote:
Originally Posted by newjeeper11 View Post
It could help ever so slightly with gas mileage but no performance gains, however, this Hemi needs any help it can get with mpg's!!! Best I've seen is 18 mpg on a long highway trip. In previous cars I've seen up to 2 mpg improvement on highway commuting with the K&N.

But if you are pulling in more air won't the car add more fuel to compensate in order to maintain a/f ratio? So it would stand to reason that you'll get reduced gas mileage because along with more air is more fuel that gets used.
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post #15 of 28 Old 01-02-2011, 07:07 AM
JTS97Z28
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Quote:
Originally Posted by SPL170db View Post
But if you are pulling in more air won't the car add more fuel to compensate in order to maintain a/f ratio? So it would stand to reason that you'll get reduced gas mileage because along with more air is more fuel that gets used.
Good point unless the computer doesn't recalibrate then your left with a slightly leaner running engine which I guess would get you a few extra miles. Only way to really tell would be to do some real life tests.
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