k-series

We've got another awesome project in the works for the 8th-generation Honda Civic Si! Our recently released performance intake system received great feedback from customers, but it also identified an additional need for intake system components. We decided to develop a Civic Si induction hose made from silicone to replace the stock rubber unit.

Stock Civic Si Induction Hose

Before jumping into the design of our prototype hose, check out a few shots of the stock unit.

Stock Honda Civic parts

Stock Honda Civic parts

The stock hose directs airflow coming through the airbox/mass air flow (MAF) housing to the throttle body. This hose has quite a unique route around engine bay components. Two separate flex joints on this piece allow for the engine movement. These areas of the hose are typically prone to cracking and splitting from oil saturation and extended exposure to heat. This hose features two crankcase ventilation (CCV) connection points that will need to be replicated on our design to

If you follow our engineering blog you may have noticed some recent attention on the 8th-generation Civic Si. Well, we aren't making a push for just this generation. We also want to dive into the 9th-generation and develop some unique new parts to improve this awesome car.

Our first project will be quite simple: to produce a Civic Si induction hose that replaces the stock rubber unit. This upgrade provides improved durability as well as pleasing aesthetics for those seeking some engine bay style. We have seen slight power increases with intake hoses developed in the past, so we will be dyno testing our component to bust any myths around power gains.

Stock Civic Si Induction Hose

Stock Honda Civic parts

The stock intake hose is somewhat similar to the 8th-generation piece, but the shape differs slightly and there is one less CCV port on the 9th-generation hose.

As with our 8th-generation unit, we will be creating a smoother silicone piece to provide unrestricted airflow in this portion of