Description

BC0623 - Stage 2: Plug and play application. Short duration for nice street manners, slight lope at idle. Excellent all purpose spec. OEM spring OK.
Duration: 272°/272°; Duration @ .050: 222°/222°; Lift - .400''/.400''

BC0624 - Stage 3: Longer duration profile, added rpm potential. Intended for fully built engine. Tuning and ECU mods recommended. Requires kit BC0600.
Duration: 280°/280°; Duration @ .050: 234°/234°; Lift - .425''/.425''

For the 2008 and up Impreza WRX STi, Subaru not only updated the chassis design, but also released a 2.5L engine with dual AVCS featured on both intake and exhaust camshafts. This engine is commonly referred to as the EJ257B platform. The STi is a series of low-volume versions with even greater power and grip were built by Subaru's in-house modifier, Subaru Tecnica International (STi). STi versions of the Impreza, which produced 280 PS (206 kW) from new, are often raced, largely unmodified, in the Group N class in various rally championships to great success. Introduced in 1994, the STi has proven to be a very popular high-performance machine in the Japanese domestic market.