Upgrading airfilter? - JKowners.com : Jeep Wrangler JK Forum
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post #1 of 5 Old 06-18-2019, 11:08 AM Thread Starter
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Upgrading airfilter?

Looking at a reusable air filter and I see some get oiled and some don't (heard the ones without oil are better) Might get it a cold air intake or just using the factory housing. Looking to squeeze out a few extra mpg. What's everyone's opinion on it?
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post #2 of 5 Old 06-18-2019, 12:15 PM
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Id be surprised if you even saw a 1 mpg increase.
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post #3 of 5 Old 06-18-2019, 07:38 PM
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Essentially the best air filter is the factory style. The box is pretty good at keeping water out (if you seal the holes in the bottom), and it's a quality filter.

The vast majority of aftermarket filters absolutely suck at filtering. A Jeep doesn't really benefit from it, and most "cold air" intakes are just a marketing term and it's still a hot air intake (how exactly does taking out the factory filter and putting a filter in exactly the same place make it any colder? It's total BS).

Aftermarket filters are for bling, or to gain room in your engine bay for suspension, engine upgrades, etc.

Your MPG is very unlikely to change at all, and if you're very lucky, you might gain a low single-digit number of horsepower.
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post #4 of 5 Old 06-19-2019, 07:32 PM
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I use a K&N reusable one, the one that is the size/shape of the stock filter.

I doubt that itís technically any better but I paid a lot for it, it makes me feel like I upgraded.

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post #5 of 5 Old 06-20-2019, 05:37 AM
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the OEM is fine .
Seat of pants feel but you will see almost no change to mpg. Honestly , the best aftermarket for Wrangler is contained from enginebay heat and elements. Our Wrangler JK/JKU enginebay's are what Mopar calls 'wet engine bays' meaning potentially full exposure to elements, water specifically. The sealed airbox takes this into consideration. As such , keeping that & selecting a drop-in filter is all you need if you gotta go aftermarket.

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