KNS Autosport
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K&N dynamometer testing shows an estimated gain of 7 horsepower for 2007, 2008, 2009, 2010 and 2011 Honda Civic Si with the 2.0 liter engine @ 6700 RPM. The air intake tube has a CNC precision machined billet mass air adaptor and a radiused filter adaptor which smoothes the air flow entering the tube.
$325
K&N dynamometer testing shows an estimated gain of 7 horsepower for 2007, 2008, 2009, 2010 and 2011 Honda Civic Si with the 2.0 liter engine @ 6700 RPM. The air intake tube has a CNC precision machined billet mass air adaptor and a radiused filter adaptor which smoothes the air flow entering the tube.
$325