Mitsubishi Evo Closed Loop Dump Valve

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes sooner Made from billet aluminium, this recirculating diverter valve dumps the charge-air back into the air intake system keeping external noise to a minimum. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably. Unlike the diaphragms valves which are prone to failure, this uses a single piston single spring. This prevents our diverter valves suffering any of the failures associated with diaphragm type diverter valves.   In The Box: 1 x FMDVEVO15 Valve 1 x Forge Sticker If you wish to tune this product to fit the needs of your engine, please see the spring tuning kit below.