Unedited unscripted testing of Empire exhaust single pipe vs dual system on a single port raptor 700 head. EHS Racing tuner vs a tuned dvno jet PCV power commander w/ ignition live dyno testing results. 2015 and newer raptor 700 supporting mods fresh rebuilt motor, yamaha oem crank, 12.5 cp piston, stage 3 hot cam, bored 47mm throttle body, back cut transmission, upgraded clutch,
