Forge EVO Type RS Valve - Recirculating
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The Forge RS valve has been specifically designed and engineered, to offer
extreme flow rate capability, where other valves are just not up to it. Often
when engines have been tuned by installing larger turbos or even software
upgrades improved turbo response can be achieved by fitting the RS valve which
has the greater internal mass air flow specification utilizing an amazing 50mm
(2") bore.
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For fine tuning there is a variable spring preload incorporated andΒ a ratchet
type top adjuster that will allow for the positive and precise adjustment that
your driving style demands.Β To ease installation a 360 degree adjustable vacuum
hose connector. With a choice of inlet and outlet connections the RS valve can
be matched to your engine perfectly.
This valve incorporates a unique conical, progressive rate spring that can allow for the retention of boost pressure from 7 to 34 PSI depending on the individual user's application and level of adjustment.
This unique spring design will also allow for unrestricted piston travel and flow volume regardless of the amount of pre-load adjustment added to the spring. Other manufacturers valves using cylindrical springs with adjustable pre-load often experience restricted piston travel and flow volume within the normal range of valve adjustment.
Fits: Lancer Evolution 8, 9
Part # FRG-RS-BOV-EVO
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