What is the difference between Option 1 and Option 2 with Micro VG Kits that include a Gross Weight Increase (GWI)?

If your kit includes a Gross Weight Increase (GWI), or change in operation airspeeds, there are two options for installation. 

OPTION 1: No Change in Performance

The vortex generators are installed on the aircraft, but the airspeed indicator is not changed, and the Pilot's Operation Handbook is not changed to reflect the improvement in performance.

OPTION 2: Change in Performance

The vortex generators are installed on the aircraft, the airspeed indicator is changed, and the Pilot's Operation Handbook is changed to reflect the improvement in performance.

Option #1 allows the owner to continue to fly the airplane even if the airspeed indicator could not be upgraded during the vortex generator installation. An Option #1 installation may be upgraded to an Option #2 installation at any time.