I recently upgraded to an air speed sensor for a wing wing z84. Plane flies create in FBWA and AUTO but it does not seem to control air speed very well. Cruise speed is 10m/s but its flying at least 20m/s. Altitude control seems fine. Wind was slight. I did the preflight calibration was reading 1-2m/s airspeed on ground.
How do I tune the TECS control for better control of the airspeed of the plane. I think it could be the TECS_SPDWEIGHT parameter but im not sure exactly how to change it. 25% throttle gets about 10m/s but in AUTO its sitting up at around 45-50% and hence why it is so fast. I've tuned FBWA so the max and min climb/dec work well with max/min pitch.
Could someone shed some light on tuning of this and how to reduce the airspeed? Even a simple starting point will help me on how to reduce the air speed in AUTO.