K&N round drop-in filter for 2013 Focus?

[Tigeo]

The pics of the drop-in for the 2013 Focus on the K&N site show a round filter...I was expecting a flat one..is that correct? I am picking up my new '13 Focus this week and want to order one for it but was surprised to see a round filter.

[PratoN]

Yup - it sure is round/cylindrical.



Source: I have one?

[raptor1956]

Originally Posted by PratoN

Yup - it sure is round/cylindrical.



Source: I have one?

Do you have to oil the K&N? Did you notice much change in sound level? Sound quality? Price?


Brian

[Wasney]

I didn't notice any sound change for mine. Got it used with around 5000 miles on it or something. Only ran it for 2 weeks before I switched to a steeda cai.

[sgmfocus]

Originally Posted by raptor1956

Do you have to oil the K&N? Did you notice much change in sound level? Sound quality? Price?


Brian

they come preoiled have to be cleaned reoiled eventually, not much difference in sound but i'm light footed on accelerator did see an improvement in mpg went from 35 b4 to 38+ after , big differences on prices i got mine for about 47.00 free shipping at autoanything.com seen them 70 or 80 dollars for same thing other places

[Tigeo]

Thanks for the picture, just wanted to make sure I got the right one. Its been years since I had one and the lats one in my Toyota truck was just flat/same shape as stock. I assume also that you can put the lid back on the air box with it installed?

[raptor1956]

Originally Posted by sgmfocus

they come preoiled have to be cleaned reoiled eventually, not much difference in sound but i'm light footed on accelerator did see an improvement in mpg went from 35 b4 to 38+ after , big differences on prices i got mine for about 47.00 free shipping at autoanything.com seen them 70 or 80 dollars for same thing other places

I would not expect any mpg gain as 99% of the time the throttle will be providing resistance to limit airflow into engine anyway so reducing the resistance with a K&N only means the throttle needs to be closed more so the net resistance will be the same. Lower resistance does, however, permit higher max power and higher power at all rpm's at max throttle...


Brian

[dyn085]

Moved to Duratec Performance (2012-2013).

I can't speak for mileage myself, but the only change I noticed on the initial installation was improved throttle response. After doing the snorkel-delete I definitely got more mileage and power.

[suss6052]

Originally Posted by Tigeo

Thanks for the picture, just wanted to make sure I got the right one. Its been years since I had one and the lats one in my Toyota truck was just flat/same shape as stock. I assume also that you can put the lid back on the air box with it installed?

The stock filter is virtually the same size and shape (give or take a few milimeters), as a paper element round filter that just slip fits onto the MAF housing and into a groove in the airbox and lid.

Yes the lid drops right back into position and bolts on with the 4 8mm bolts.

I installed one after around 500 miles of driving, but noticed almost no difference in fuel economy directly before or after installing the filter, even as the engine broke in a bit. I've since swapped the stock airbox and K&N filter for a Steeda CAI about 3-500 miles ago (Car now has over 14,3xx miles on it).

The filter did seem to help throttle response somewhat, but it wasn't that dramatic, or I got used to it fairly quickly.

If you just want a mild modification that is re-useable, washable, and re-oilable to last the life of the car the K&N is a good option compared to the stock paper filters.

[Elizabeth]

I switched to the K&N filter, and also got a little MPG increase.
The filter is a cylindrical shape.
And the near edge is critical to fit INTO the groove on the far side of the box. it really matter to get the fliter all the way on, AND the filter near end fit into the tiny groove edge of the box properly.