Forge Piston Ram Dump Valve for Evo 4-X (FMDVEVO14) Finish:Black CZ4A 2011-2015 Evolution X

CZ4A 2011-2015 Evolution X

PTE Part Number Compressor Cover Exhaust Housing Inlet Exhaust Housing Outlet A/R 30702004069 E Cover T3 Inlet 4-Bolt Outlet

You could always just remove it

Excess fuel in the surge tank is returned back to the vehicle's main fuel tank

Part Number: Alternate PN: 68261504AA -

Forge Piston Ram Dump Valve for Evo 4-X (FMDVEVO14) Finish:Black CZ4A 2011-2015 Evolution XMade from billet aluminum, 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. Vehicle Fitment: 2008 2015 Evo X (GSR, MR and Final Edition models) 2001 2006 CT9A Evo 7 8 9 (GSR, RS, SE and MR models) 1996 2001 JDM Mitsubishi Lancer Evolution 4 5 6 models