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#1 (permalink) Old 08-24-2011, 08:22 PM
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Default replacing engine air filter

I can't seem to get the cap/cover to open fully to take out the old engine air filter and replace it with K/N air filter specifically for the 2011 kia optima.

According to the owner's manual, there are 4 clips which I loosen but I still struggle to open enough to allow easy access. I am afraid to pull it too hard

Is there a trick to do it?

Thanks
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#2 (permalink) Old 08-25-2011, 03:16 PM
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I replaced my OEM paper filter with a K&N and I unsnapped the front clips and I can't remember if I unsnapped one or two clips in the rear. I seem to recall unclipping the one on the driver's side of the housing and I may or may not have unclipped the one on the rear under the inlet tube but I do know that you can simply lift the front end and pull the old one out and pop the new one in. It looked like it wouldn't clear but it actually will if you pull up and pull the filter up and forward at the same time. If you can find that 4th clip and unclip it I'm sure it will help but I don't believe I needed it to change the air filter.
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#3 (permalink) Old 08-25-2011, 05:49 PM
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Originally Posted by OstrichSak View Post
I replaced my OEM paper filter with a K&N and I unsnapped the front clips and I can't remember if I unsnapped one or two clips in the rear. I seem to recall unclipping the one on the driver's side of the housing and I may or may not have unclipped the one on the rear under the inlet tube but I do know that you can simply lift the front end and pull the old one out and pop the new one in. It looked like it wouldn't clear but it actually will if you pull up and pull the filter up and forward at the same time. If you can find that 4th clip and unclip it I'm sure it will help but I don't believe I needed it to change the air filter.
Question... Did you notice any improvement in mpg with the new air filter???

thanks

-jj
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#4 (permalink) Old 08-26-2011, 10:59 AM
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Question... Did you notice any improvement in mpg with the new air filter???

thanks

-jj
Nope. I doubt anyone will either. The filter that came out was almost new w/o any debris and the stock filter design is actually quite efficient so I wouldn't expect to see any gains in either mpg or power or at least nothing noticeable. Might see a few gains on paper but I doubt it will be much. Some vehicles experience noticeable gains but I don't think the turbo Optima will be on that list.
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#5 (permalink) Old 08-27-2011, 07:36 AM
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I've had K&N's in 3 different vehicles, all making over 300hp. I never saw any gains in power or mpg, only took me 3 times to learn my lesson. There's no way I'd waste my money on one for a 4 banger. Just my $.02

'11 Platinum Graphite LX M6
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