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Old 09-06-2016, 07:15 PM   #1
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Best drop in air filter

Hey guys I was checking out air filters on American muscle and wanted the opinion of some of you out there who might have the filter or have any opinions on what you think of them. First of all my car has 25000 miles is it too soon to change factory air filter? I think the interval is 30000 on the stock ford one. Secondly I want a drop in not cold air intake as I want to try to keep the car as stock as possible in order to avoid issues with the warranty. Ok so I noticed two k and n filters the regular drop in and the ford racing drop in. What's the difference between these two? To me they looked the same. I also noticed two afe filters a regular drop in and then one with a kind of weird shape. Now which do you guys think is the best in terms of performance mpg sound etc. I know I shouldn't expect much but since I'm going to keep the car for a while I think a washable filter would be the best option economically. Thanks for the guys.
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Old 09-06-2016, 07:31 PM   #2
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An intake won't void your warranty but K&N is a trusted brand. I personally have one and it'll go 50,000 miles before they recommend cleaning it. I personally do it more because it's not that big of a hassle to clean it. I'm not sure about the difference in the two that you mentioned but you should be able to chat with a rep on the website and he can tell you. Good luck.


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---------- Post added at 01:31 AM ---------- Previous post was at 01:30 AM ----------

What year is the car?


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Old 09-06-2016, 07:45 PM   #3
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I use an aFE drop in. It's a dry filter & extremely well made (but pricey). When it's time, remove, & hose off, let dry & reinstall. Should last as long as the car.
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Old 09-06-2016, 08:17 PM   #4
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I use an aFE drop in. It's a dry filter & extremely well made (but pricey). When it's time, remove, & hose off, let dry & reinstall. Should last as long as the car.
Same one I have. AFE Pro-Dry.


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Old 09-06-2016, 08:19 PM   #5
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I use an aFE drop in. It's a dry filter & extremely well made (but pricey). When it's time, remove, & hose off, let dry & reinstall. Should last as long as the car.

Try using simple green when you clean it. Spray all over and let it sit for 10 minutes then hose off. Works wonders


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Old 09-06-2016, 10:30 PM   #6
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Best drop in air filter

The k&n will actually give you loss of hp, not much but it will.
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Old 09-07-2016, 10:20 AM   #7
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The k&n will actually give you loss of hp, not much but it will.

How does that work?


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Old 09-07-2016, 10:50 AM   #8
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The k&n will actually give you loss of hp, not much but it will.
I can see no gain but there is no reason a K&N would cause a loss of power.

Dave
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Old 09-07-2016, 10:58 AM   #9
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The k&n will actually give you loss of hp, not much but it will.
I assume that's based on the actual dyno test someone made and which is on Youtube somewhere.
But I wonder, how do we know if the AFE Pro-Dry is any different? I know I can't tell.
I was thinking I may put the stock filter back in to see if I notice a difference with MPG.
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Old 09-07-2016, 11:01 AM   #10
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The stock filters are already amazing as it is just don't look as cool. I would guess the mpg is close to if not the same


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Old 09-07-2016, 11:18 AM   #11
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WIX.
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Old 09-07-2016, 11:20 AM   #12
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Either filter is good. You won't notice any gains, but at least they last a lifetime.
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Old 09-07-2016, 11:28 AM   #13
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WIX.
WHY?
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Old 09-07-2016, 11:32 AM   #14
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I can see no gain but there is no reason a K&N would cause a loss of power.

Dave
Someone actually made a test on it, loss around 4hp I think compare to the stock paper one.

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Old 09-07-2016, 11:33 AM   #15
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Here's proofs just found the website http://www.svtperformance.com/forums...nt-Filter-Test

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Old 09-07-2016, 12:39 PM   #16
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WHY?
WIX..... I've used them for many years on several brands of vehicles including my current mustang, a Jaguar XJ6 I once had. A couple of Land Rovers, and a couple of Dodge Quad Cab pickups.

No oils, no brand name pricing and gave great performance both in air flow and cleaning.

I also use their oil filter. I did the research several years ago and they came out on or near the top enough to convince me.
I'm sure the links are still out the somewhere.

I've tried the K&N but did not get the performance boost promised and to me it was messy and a lot of cash to pay for an air filter!

Others will disagree but I don't care!
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Old 09-07-2016, 12:39 PM   #17
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The K&N drop in filter was developed in collaboration with Ford Racing and, according to Ford Performance, provides an immediate 7 HP gain with no other changes. K&N is proven and is approved by Ford as far as warranty issues go.
I've personally given a lot of thought to going with the aFE filter, but have not been able to find any substantiated evidence of superiority to the K&N.
My recommendation is go with the K&N or stay with the stock filter.
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Old 09-07-2016, 12:49 PM   #18
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The need to require oil discourages some from the K&N. Must be careful not to over oil or it can mess up your MAF.
I have a K&N in one of my cars with no problem. I haven't had to re-oil it yet though.
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Old 09-07-2016, 02:32 PM   #19
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WIX..... I've used them for many years on several brands of vehicles including my current mustang, a Jaguar XJ6 I once had. A couple of Land Rovers, and a couple of Dodge Quad Cab pickups.

No oils, no brand name pricing and gave great performance both in air flow and cleaning.

I also use their oil filter. I did the research several years ago and they came out on or near the top enough to convince me.
I'm sure the links are still out the somewhere.

I've tried the K&N but did not get the performance boost promised and to me it was messy and a lot of cash to pay for an air filter!

Others will disagree but I don't care!
Well if Wix is a lifetime filter for less money, then it is well worth it. I think he's looking for one that doesn't have to be replaced, but just cleaned.
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Old 09-07-2016, 02:52 PM   #20
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Look close at the Ford stock air cleaner filter and you can plainly see it has more then enough area to feed more air into the engine then the engine needs.
Ronnie

I have an Airaid "CAI"on my car but more for the great sound and eye candy under the hood then anything else.
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Old 09-07-2016, 03:41 PM   #21
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Well if Wix is a lifetime filter for less money, then it is well worth it. I think he's looking for one that doesn't have to be replaced, but just cleaned.
How much are the recharge kits now? A WIX filter runs around $18.
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Old 09-07-2016, 04:19 PM   #22
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How much are the recharge kits now? A WIX filter runs around $18.

The recharge kits are about $15-$20 but you only have to do it every 30k-50k. I have AIRAID and its non-oiled so I just use simple green


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Old 09-07-2016, 05:09 PM   #23
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The recharge kits are about $15-$20 but you only have to do it every 30k-50k. I have AIRAID and its non-oiled so I just use simple green


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I'd not heard of the AIRAID till today. But for $68+- ($85 some places) you can get one of those and wash it every 30k or so miles. In 200,000 miles you'll do that call it 6 times.

Get a fresh WIX every 30k and in 200,000 you'll spend about $108.

So you'll save a few bucks with the AIRAID and I'm sure washing it out with the simple green is no big deal.

I'm also sure that either one gives equal air cleaning and "performance"

Maybe I'll look at the AIRAID in about 25000 miles!

Just have to see what mood I'm in when the time comes!
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Old 09-07-2016, 05:52 PM   #24
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I'd not heard of the AIRAID till today. But for $68+- ($85 some places) you can get one of those and wash it every 30k or so miles. In 200,000 miles you'll do that call it 6 times.



Get a fresh WIX every 30k and in 200,000 you'll spend about $108.



So you'll save a few bucks with the AIRAID and I'm sure washing it out with the simple green is no big deal.



I'm also sure that either one gives equal air cleaning and "performance"



Maybe I'll look at the AIRAID in about 25000 miles!



Just have to see what mood I'm in when the time comes!

Is yours a drop in or a CAI? I know this thread is about a drop in but I can't remember who started it


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Old 09-07-2016, 06:35 PM   #25
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Is yours a drop in or a CAI? I know this thread is about a drop in but I can't remember who started it


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Mine's a drop in. Not going to do a CAI . I read on this very forum about how while they look pretty there is no real power gain as the stock air intake is, you guessed it, a basic factory CAI.
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Old 09-07-2016, 07:53 PM   #26
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Mine's a drop in. Not going to do a CAI . I read on this very forum about how while they look pretty there is no real power gain as the stock air intake is, you guessed it, a basic factory CAI.

Yeah personally I wouldn't buy one for performance just for looks and only if it was cheap enough. Mine came on the car when I bought it so can't complain


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Old 09-08-2016, 04:15 AM   #27
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Check Advanced Auto Parts for the K&N filter, they have a code for 10% off and free pick up at a local store, hope this helps


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Old 09-08-2016, 04:44 AM   #28
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I run the afe pro dry, gains? Doesn't hurt and offers more surface area. Of course I bought it because it's cleanable and non oiled which will last years.

Stay away from oiled filters, they only end up slowly gunking up your maf sensor as the oil gets sucked off the filter.
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Old 09-08-2016, 06:55 AM   #29
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Here's proofs just found the website http://www.svtperformance.com/forums...nt-Filter-Test

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I find a sample of one interesting but hardly conclusive of anything. It would be even more interesting to see the results of a stock filter with 10k miles vs a K&N with 10k miles.
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Old 09-08-2016, 07:14 AM   #30
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Everyone is free to run what they please but before people start claiming it pays for itself you need to realize that is roughly the cost of 4-5 paper filters. You would need to keep the car for a minimum of 120,000 miles to break even (not factoring in the cleaning kits). Very few people will keep/ drive the car long enough to see any sort of cost benefit from it.


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Old 09-08-2016, 07:30 AM   #31
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I may just end up putting a new factory air filter in. Due to my driving habits it would take a long time to justify getting a rewashable filter. Somewhere like 5 years when I consider how much I drive per year. So if there is no real gain at all in performance or mpg then it seems like the best option for me at least would be to just get a factory air filter.
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Old 09-08-2016, 03:14 PM   #32
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I did an experiment and the stock filter actually flows better than the K&N drop in. Also the stock has more filter area than the K&N.

Also, keep in mind, that the stock V6 filter is the same exact filter as the V8. It flows more than enough air for another 1.3 liters of displacement.

Honestly, on the intake side of things Ford nailed it.




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Old 09-08-2016, 03:21 PM   #33
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Hi Vig,
Just what I said.
I really don't think the Ford filter can be beat for performance and filtering.
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Old 09-12-2016, 06:02 PM   #34
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Update
Went into the auto parts store to get a new stock filter but they had the ford racing kn filter discounted and ended up getting it. Soon as I put it in I noticed a bit louder of intake sound, air/fuel ratio according to the ford monitors on dash were the same except when I accelerated it didn't go down as much as it used to, it felt a bit faster and more responsive at higher rpms, and mpg seems down a bit, also according to the 0 to 60 timer it's about the same as with the stock filter except the launch wasn't great so I'm thinking it could be better. Keep in mind that what I have noticed could just be the difference between a clean and a dirty filter and not the difference between the stock filter and the kn filter.

Now here's where things really change up. So I was happy with the filter but started thinking hmm maybe the ecu hasn't adapated to the added airflow, if in fact there's any, so I disconnected the battery about 10 or 15 minutes and disconnected the MAF in case it made a difference at all. After reconnecting everything I started the car up and engine sound was way louder like a lot while idle rpm was still the same. Also there's a slight pop in the exhaust when accelerating which activities wasn't there before. Note this whole part was tested with the car parked. Will update tomorrow on if there are any other gains or losses when I take the car out on the road.
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