Installation Write Up at Country Hills Collision Provided by Sean Schoenfeld from the MK Group

The Agency Power valve controlled exhaust gives the user the ability to control the performance and sound of the exhaust with the push of a button. The high quality dual 2.75”, TIG welded stainless steel system, is like fitting an OEM component to your vehicle. Including all necessary hardware for fitment, there is no cutting, welding, or adjustment required. The bolt-on system saves a lot of weight off the back end of the car, compared to the bulky stock unit. 

At the push of a remote button, a valve opens up on each muffler giving you a race mode with maximum performance. Where other exhausts are always loud, the Agency Power exhaust can be loud only when you want it, giving you a roaring V8 sound, or quiet for smooth city or freeway cruising. With the valves closed, having a conversation, talking on your phone, or listening to music is comfortable. The performance you get from race mode exceeds others systems in sound and quality. With the powerful AMG V8 engine, the Agency Power exhaust extracts an additional 24 rwhp and 16 ft lbs of torque. These gains game from a before and after muffler on the C63 Coupe with headers and mid section already installed.  If you’re looking for an exhaust that gives you the best of both worlds, then the Agency Power system is the only choice to keep the luxury of the Mercedes C63 AMG Coupe along with its race inspired roots all in one package.

Install Guide:

• Disconnect negative terminal on battery (located in trunk of vehicle).

• Remove rear bumper cover.

• Remove OEM exhaust (2 clamps at catalytic converter/two hangers. 4 hangers at mufflers/2 per side). *Clamps at catalytic converter will need to be reused*.

• Remove air intake tube.

• Locate vacuum line in driver’s side of engine bay. Cut and fold back insulation then splice hose.
• Install t fitting (will require larger diameter fitting).

• Install one way check valve *black side of valve facing towards rear of vehicle*.

• Run hose along upper left frame rail towards rear of vehicle.

• From under the vehicle use a pry bar to slightly bend exhaust heat shield. Route hose on underside of shield from frame rail. *make sure there is enough room that hose is not pinched at any point*.

• Remove left under side floor cover.

• Route hose along left side of vehicle and over rear cross member to rear body panel *make sure hose will not be affected by any moving suspension components*.

• Install new mid pipe and mufflers.

• Mount canister and electronic valve to rear body panel.

• Loosen left and right rear inner heat shields. Route hose lines under shields to rear body panel*
• Install hose from front of vehicle to left side of t fitting.
• Install hose to canister from top of t fitting.
• Install hose to electronic valve on right side of t fitting.
• Install hose from 2^nd unused port on electronic valve to next t fitting.
• Install hose from left actuator to left side of t fitting.
• Install hose from right actuator to right side of t fitting.

• Route wiring from electronic valve to inside of trunk*rubber plug on right side of rear body panel is a good access point*.

• Connect brown wire to ground.

• Connect red wire to 12v accessory power supply.

• Plug harness into module.
• Reconnect battery.
• Turn vehicle ignition to accessory. Check module for power (red light on top of unit).
• Start vehicle. Using remote make sure actuators are working.
• Install all removed covers etc.
• Take vehicle for test drive.
• Recheck connections, hoses etc.