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Cool, thanks for the info guys. I'm thinking I may go with the AEM filter; listened to some videos of other closed filters and they still sounded pretty loud (but also pretty nice); can't imagine wanting to go much louder.
Will also need to have a look about getting the ST snorkel. I don't really like the idea of leaving it just bare like that, and 5 bucks is a low price to pay.

Either way, looks like it'll all have to wait a bit; it started snowing here after such beautiful weather. I hope not many people here swapped out their winter tires...
I would get a Mountune or Green open end filter
 

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Sorry to be a pain, but is there any huge benefit of the K&N over the AEM Dry Filter? I am not experienced with car things like this at all, so am somewhat wary on doing so; don't want to break my MAF or other components (though I guess the instructions are likely pretty simple).

There's also that on Amazon.ca, the price difference between the AEM AE-20993 and the K&N E-2993 is about $30... The K&N E-9289 is another $10 (so $40 from the AEM). Haven't really looked locally with the weather as it is. Thanks again!~


It's preference. The k&n and other oiled filters are cleanable and thus reusable. The aem is a dry filter thus requiring replacements.


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Yeah, the AEM one is still advertised as being reusable. I'll take a look locally as well, see if there's one that has been mentioned that has a good sale on it or something.
 

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Hi Guys, I've done the snorkle delete but not yet put a new filter in there and I've noticed my fuel efficiency has dropped by about 60km/tank, is this to be expected and will it be fixed with a new filter?
I've been quoted $150 to get a focus RS airbox (welcome to australia prices) and then a green filter would be approx $80 more, but I've seen the FSWerks intake includes a green filter with it. Even though it doesn't look open ended from the pictures, would they been the same filter? Which would provide better gains?
 

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Just get a green filter drop in abs leave the stock box.

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Just get a green filter drop in abs leave the stock box.

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Surely a rs box would give better results? Or is it not noticeable considering the price.
Anyone know the cheapest way to get Green filters in Australia? The cheapest I can find a K&N is for about $95 but the end isn't open so not sure if it will do as well?
 

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I doubt it would be a noticeable gain over just the stock air box with a open ended filter.

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Surely a rs box would give better results? Or is it not noticeable considering the price.
Anyone know the cheapest way to get Green filters in Australia? The cheapest I can find a K&N is for about $95 but the end isn't open so not sure if it will do as well?
SuperCheapAuto sometimes has it on sale, got mine for $70.
 

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I did the snorkel delete and installed a AEM Dryflow filter last year (on my 2014 SE hatchback) and I have been very happy with the outcome. I have reduced the annoying lag at takeoff to the point that I no longer have to concentrate coming off the clutch in order not to stall (I would call it a 90% improvement). I think the clutch pedal has become less stiff which also helps with 'feel' (my Focus had 4 miles on it when I purchased it and now has 23K...it seems to have 'broken in' if that's possible...but at any rate the car is much more pleasurable to drive now.

I removed the entire snorkel but did not cut flaps etc...I also left the stock airbox when I installed the Dryflow air filter...if there was a slight difference in noise, I no longer hear it (I'm used to it). The same goes for MPGs....no noticeable difference.

My question is...Does removing the entire snorkel have any negative effects on the durability of the engine? I ask because I see that some have cut their snorkel and reinstalled it.
Thanks.
 

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My question is...Does removing the entire snorkel have any negative effects on the durability of the engine? I ask because I see that some have cut their snorkel and reinstalled it.
Thanks.
I can't see how modifying the airflow could possibly affect engine life. If it did I believe it would be minuscule.
 

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Deleted snorkel and installed cbe

I own a 2015 SE hatchback with the 200A equipment group and the SE Sport Package.

I removed the snorkel and replaced the filter with an AEM in the stock housing. There was not much change in the sound. I noticed a "smoothing" of the low range acceleration in slow traffic. Prior to the mod, the car would balk in off idle to fifteen to twenty mph. Definitely an improvement.

I just replaced the oem exhaust system with a Magnaflow cbe. On the current fill up of 87 octane the average mileage is indicating 37 mpg.
 

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Just did mine. Bought a k&n filter with the snorkel delete and the car feels smoother now. I don't notice difference in sound and I've only driven about 5 miles, so maybe it's too early to tell. So far though, I'm liking it.
 

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I just did the open ended green filter and snorkel delete on my 13 SE. I cant believe how much noise this thing makes now. On a slightly different note, do these cars have engine noise piped in through the stereo?
 

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Good to know. I drove a sedan and a hatch back to back and the hatch was much louder. Both of them bone stock. I ended up buying the hatch and it was a lot louder than what I would have ever guessed. I had heard that the RS has some sound piped in through the stereo is why I thought maybe some others did.
 
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