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EJ257B DUAL AVCS CAMSHAFTS
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. |
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Stage |
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Description |
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Part# |
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Adv. Dur. |
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Dur @ .050 |
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Lift (in) |
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Lift (mm) |
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Kit# |
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Cam Card |
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Dyno |
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Shop |
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Status |
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Street/Strip Specification
Plug and play application. Short duration for nice street manners, slight lope at idle. Excellent all purpose spec. OEM spring OK. |
BC0623 |
272°/272° |
222°/222° |
.400"/.400" |
10.16/10.16 |
BC0600 |
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In-Stock |
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Race Specification
Longer duration profile, added rpm potential. Intended for fully built engine. Tuning and ECU mods recommended. Requires kit BC0600. |
BC0624 |
280°/280° |
234°/234° |
.425"/.425" |
10.80/10.80 |
BC0600 |
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In-Stock |
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USDM EJ257 (’05-up STi) |
Stock |
256°/256° |
204°/208° |
.378"/.385" |
9.60/9.78 |
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JDM EJ254 |
Stock |
256°/256° |
211°/209° |
.374"/.371" |
9.50/9.42 |
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619.749.9018 ph
619.749.9128 fx
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VW / AUDI
