Vivid Racing recently tested the new Agency Power prototype exhaust system on a Porsche Cayman S. The all 321 stainless steel exhaust provided an excellent sound to the vehicle and added quite a large gain in horsepower and torque on the Mustang dyno. Putting down 23 rear wheel horsepower over the baseline and gaining 11ft/lbs of torque.

Check out all the pictures of the test and fitment here –
https://www.myvividracing.com/gallery/browseimages.php?c=252

Listen to the sound clip of the exhaust here –
https://www.agencypower.com/catalog/images/ap987exhaust.wmv

or at YouTube.com here –
https://www.youtube.com/embed/9NVsR8Vws64