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For fine tuning there is a variable spring preload incorporated and a ratchet type top adjuster that will allow for the positive and precise adjustment that your driving style demands
Our valve uses full billet alloy construction with a piston based internal design that provides for significantly improved reliability over the OEM valves along with lightning fast response
This is a direct OEM replacement part
2) Better oil cooling
Forge Motorsport Mitsubishi Evo and GTO Piston Ram Dump Valve 520i For fine tuning there isWe recommend servicing your valve every 3 years, or 20,000 miles, whichever comes sooner Made from billet aluminium, this atmospheric diverter valve dumps the charge air to atmosphere creating the "Whoosh" sound most commonly associated with rally cars. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably. All Forge Motorsport Dual Piston Atmospheric Valves have been designed and built with
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