AF9590-4000 - AEROFLOW 4" EXHAUST CONTROL VALVE OPENS WHEN BOOST REACHES 6-7 PSI

Do you want the benefit of having the full noise and power of an open header at full throttle but also keeping it quiet for cruising the streets˝ Thanks to Aeroflow Performance the boost activated exhaust control valve (ECV) you can have the best of both worlds. No more wiring up expensive and unreliable electric exhaust cut-outs and no more climbing underneath the car to open the manual exhaust cut-outs. It's just a matter of hooking up the boost referenced vacuum line or a mac valve solenoid and you are ready to go. These ECV is for use with turbocharged vehicles and will open the exhaust valve when boost reaches roughly 6-7 psi. Allowing a quieter exhaust when driving around normally. The higher pressures can be obtained with either a installing a manual boost controller or a mac valve solenoid. The exhaust valve is normally closed for all applications. Installation requires fabrication work to weld into the current exhaust system with a T-piece or Y-piece (Sold Separately).