I would have to say yes, it would make a difference. I have had them in<br>my vehicles for years and it does help them <br>squeeze a little more power and better gas<br>mileage. All the aftermarket tuners install<br>them in their cars. Also they will last a lifetime!<br>Just clean them once a year and reinstall!<p><br>: Anybody running a K&N Air Filter in their C43? I noticed this site: http://www.performanceproducts.com/Catalog/RequestCategory.asp?model=C43<br>carries one. If so, does it make any difference? Just curious.<br><p>