Product Details:

The latest and BIGGEST addition to our extensive range, the GFB SV45 is designed specifically for drag racing and big horsepower engines. With a 45mm piston and three large flared outlets, the SV45 flows like nothing else! Key features:

-Capable of supporting in excess of 1000hp!
-Massive 45mm piston, with smooth flow contouring.
-Three flared venting ports cut into the body with a dual angle, designed to match the piston at full travel -for the smoothest flow path of ANY valve on the market.
-Tapered Acetal piston seat for a perfect seal under boost.
-Unique ball-type attachment method for a fast, easy and reliable installation.
-Comes with two springs to suit all engine types.
-Aluminium weld-on adaptor supplied, stainless steel also available (part # 6408)

Fits:

Mazda RX-7 S4 & 5 (1986 – 1991)
    *Custom Installation: usually involve fabricating a replacement turbo-intercooler up-pipe with a 25.4  mm pipe welded on to mount the GFB valve. When using a GFB BOV on an RX-7 with a front mounted intercooler, the BOV should be custom installed by welding a short section of pipe onto the intercooler plumbing*

Additional Notes:

 -When using the factory engine management computer, The GFB Plumback and Hybrid are recommended since they can be used successfully on air-flow metered vehicles.

-Cars using the standard turbocharger can sucessfully use any GFB BOV. For high power street applications (high flowed turbo or street TO4 setup: 250 – 350 rwhp) the high-flowing Basic and the Bovus Maximus are good choices. For competition vehicles with power outputs nearing 1000 Hp, the SV45 is recommended.