K&N 06+ Civic Si Drop In Air Filter Short ram Intake System Converts to top-feed fuel injectors

Converts to top-feed fuel injectors with 14mm O-rings

WHY IS THE BEGI Fuel Pressure Regulator BETTER

If you do NOT purchase an ECU from us you must send in a comptable ECU as seen in the images

They were designed primarily to be used with Gasoline based fuels

It may also be mounted off the engine

K&N 06+ Civic Si Drop In Air Filter Short ram Intake System Converts to top-feed fuel injectorsK&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace