cp-e Exhale Hard Pipe To Throttle Body w/ HKS Flange - 2013-2018 Ford Focus STHere, you are looking at the cp e Exhale Hard Pipe to Throttle Body Kit. This particular kit will come with the HKS BOV Flange for those of you who want to install the HKS Blow Off Valve to your charge pipe. The charge pipe features durable aluminum construction and has a smooth bend to provide an unobstructed flow of air for improved boost response. The blow off valve flange will allow the user to get that aftermarket blow off valve sound to improve