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Agency Power OEM Exhaust Valve Delete Box


Agency Power

Model #AP-FOCRS-177

In Stock

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Many new vehicles come with factory exhaust valves that open and close depending on what mode your car is in. When this flap opens, it may change the exhaust flow to give your vehicle a louder sound. Some of these valves are connected to the cars factory electronics. An aftermarket exhaust is one of the most popular first upgrades for tuning enthusiasts. However if the new exhaust system does not retain this factory exhaust valve, you may incure a check engine light or drive mode failure like on the Focus RS pictured.  

Agency Power has developed this exhaust valve delete box that acts as a simulator with the factory valve. Once you remove the factory valve from the stock exhaust, you leave it electronically connected to the car. The valve cannot just be plugged in, but needs to still function like normal. The exhaust valve delete box features an aluminum construction that has been formed to connect to the factory valve unit profile.  Each box has been powder coated matte black to be very durable from the elements. Inside the box is a CNC machined, 6061 aluminum indicator that allows the factory exhaust valve components to act as if it were still installed.  The position of the valve is what tells the car if the valve is open or closed. The kit comes with new stainless steel hardware to mount the valve to the box and a bracket to mount the box on the underside of the car.  


  • Allows for use of aftermarket exhaust with no valves
  • Will not cause drive mode errors or check engine lights
  • Aluminum construction with a 6061 CNC machined indicator
  • Powdercoated for durability
  • View Installation Instructions Here


  • 2016+ Ford Focus RS
  • 15-19+ Mustang GT350/GT350R
  • 15-19+ Dodge Challenger
  • 15-19+ Dodge Charger
  • 15-19+ Audi S3
  • 2013-2016 Audi S6
  • 2014-2016 Audi SQ5
  • 15-19+ Volkswagen Golf R
  • Any vehicle utilizing this style exhaust valve actuator shown below

Proposition 65

/!\ warningWARNING: Cancer and Reproductive Harm

Vehicle Engine Notes
Audi A3

Audi A3 Quattro

Audi S3

Audi S6

Audi SQ5

Dodge Challenger

Dodge Charger

Ford Focus RS

1964-1973, 1979-2017, 2019-2020
Ford Mustang

1969-1970, 2012-2013
Ford Mustang Boss 302

Ford Mustang EcoBoost

Ford Mustang GT

Ford Mustang GT500

1993-1999, 2001, 2003-2004
Ford Mustang SVT Cobra

1965-1967, 2015-2020
Ford Mustang Shelby GT350

Volkswagen Golf R

Agency Power Industries LLC was developed out of the need to provide quality, functional, and fashionable racing products. Starting from sway bar endlinks for the Subaru WRX back in 2003, Agency Power now has over 300 part numbers for cars ranging from the STI, EVO, M3, 996, TC, and more. Based out of Arizona, Agency Power has established itself as one the core aftermarket companies for Subaru WRX STI and Mitsubishi EVO products. With new focus on the Porsche and BMW market, Agency Power is constantly developing new functional and race proven products. With dealers worldwide, the AP brand is recognized globally. Working with top distributers and tuners in the USA, AP can be found in Singapore, England, Canada, Australia, South Africa, and other parts in the EU.
Policies regarding warranty:
  • Agency Power offers a LIFETIME Limited Warranty against defects or failures.
  • Product Warranties are available for those who fill out the online warranty form on Agency Power.
  • Warranty is available with original Invoice showing purchase date.
  • Titanium exhausts and carbon fiber products carry a 12 month warranty from the date of purchase.

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