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K&N Air Filters Part #33-2417 Customer Reviews
Reviewed by Konstantinos X (MARKHAM, ON) Reviewed for a 2010 Smart Fortwo — Dec 16, 2015 8:06 PM
I spent my hard earned cash on this filter and although I haven't noticed a difference, it definitely is a filter of premium quality when compared to my old one. If money not an issue then this filter offers the peace of mind that you got the best out there.
Reviewed by Joyce C (San Antonio, TX) Reviewed for a 2009 Smart Fortwo — May 12, 2012 5:57 AM
KN& filters are of superior quality, improve performance and are well worth the money. Be it air or oil filters K&N do the trick for us. We've owned everything from Corvettes, trucks,gas savers & K&N will only go in our vehicles. Auto Anything has the BEST prices for parts.
Reviewed by Erik S (La Grange, KY) Reviewed for a 2008 Smart Fortwo — Apr 20, 2010 8:18 AM
Wow, I can't believe the big difference a little filter can make. For comparison purpose, I held a new factory filter up to a light, then the K&N filter up to a light. It was a night and day difference; the K&N filter allowed more light to shine through. My driving test, though less scientific, resulted with a feeling of more power. I haven't compared before and after gas mileage yet, but I anticipate improvements with that measurement too.
Reviewed by Robert C (Libertyville, IL) Reviewed for a 2008 Smart Fortwo — Aug 08, 2009 6:18 AM
The air chamber on the Smart Car is nearly impossible to get to and it will be so nice not to have to change a filter every 10,000 miles. I do think its still ridiculously overpriced at $50!
Reviewed by ROBERT B (Palm Bay, FL) Reviewed for a 2009 Smart Fortwo — May 05, 2009 11:41 AM
I have been using K&N air filters for more than 20 years now. I have installed them in every car, truck and motorcycle I now own. I have found out by experience that K&N air filters give my vehicles more power, better gas mileage and smoother, better running engines. The longevity and lower maintenance is just another big plus. Yes, I know it sounds like a commercial, but when a product works for you as well as K&N filters work for me, I just keep using them. Sincerely, Robert Bullen
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