cp-e is excited to release the ultimate in cold side cp-e now offers the last Blow-Off Valve (BOV) upgrade you will need for your Focus ST. With the option between arguably the two most popular BOVs in the turbocharger community, you can now truly get rid of your stock BPV and attain the sound, reliability, and beauty of a Tial Sport BOV or HKS SSQV BOV.