Bolt-On Horsepower. Complete replacement of your exhaust system. For all models of Diamond DA40. Note: installation on equipped aircraft will require local approval by your installer. Make your Cardinal a faster, higher flying bird. Similar technology has been used in race cars and motorcycles for years, now it is available for your Diamond DA40. By effectively emptying the cylinders, our tuned exhaust system is capable of increasing your airspeed by up to 6kts. Watch your VSI as climb increases by up to 20%. The Power Flow is a versatile, quality constructed, complete replacement of your entire exhaust system. You are in control. For more speed, push the throttle forward and feel the extra power. For fuel savings, throttle back and fly your pre Power Flow airspeeds. The entire system is constructed from aircraft quality stainless steel and includes minimal structural welds in the cabin heat section for improved safety. All necessary parts are included for easy installation. Systems can be installed by one of our dealers, by your local A&P, or you can fly your plane to us for a local install. Fly in with a standard Diamond DA40, fly out tuned for performance.