Suzuki GSX8S / GSX8R M4 exhaust testing/tuning! V-strom 800

My testing and tuning results with the M4 exhaust on my Suzuki GSX8 With a direct comparison to the Akrapovic. Purchase my flash here https://www.vcyclenut.com/store/p264/... Please visit my website GSX8 / Vstrom 800 testing and development page https://www.vcyclenut.com/gsx8.html Please visit my GSX8 / Vstrom 800 store to purchase this exhaust, my flash and other GSX8 specific products https://www.vcyclenut.com/store/c35/S...