Originally Posted by nacho2059
I dont have a programming card. can programming take place without one?
The fans sound the same but the power surges at around 3/4 throttle on one of the esc.
my concern is while flying and I reduce power that the surging will effect the control.
Did you use their Y harness that came with the plane? If so start there. That could be the source of your issues. I have had a lot of problems with the Y harnesses that they supply. If you want to narrow down if that it the problem, run one motor up at a time by connecting it directly to the throttle channel. If you don't get any surging then there is your problem...