GFB has released a new version of its popular Hybrid valve to suit the Subaru Legacy GT, MY03 – current models (single turbo version).

It comes as a complete bolt-on kit, and most importantly, does NOT require modification or cutting of the factory plastic engine cover, unlike some other brands on the market.

 As with all our Hybrid valves, the kit comes with a plug set to allow three venting configurations:

· 100% plumb back for silent operation, just like the factory valve
· 100% atmosphere for maximum noise
· 50/50 plumb back/atmosphere for a more subtle but audible blow-off sound