K&N has designed a performance air intake system for the 2009 and 2010 Honda Fit 1.5L. K&N dynamometer tests show a 4.53 horsepower gain with use of this K&N air intake modification. K&N tests multiple vehicles for each air intake kit it makes to ensure a consistent horsepower and torque gain. This video demonstrates the steps needed to install a power gaining K&N air intake into a 2009 and 2010 Honda Fit 1.5L. http://www.knfilters.com/video/69-1017_INSTALL.html
