I m posting this on behalf of a friend of mine coz nothing that we do seems to solve the problem.
My friend has been using Hobbywing Xtreme Stock combo with Hobbywing 11.5T motor for the past 2 weeks which include 1 race day. For the past 4 days he's having problem with the esc somehow loosing the turbo function, its more like its switching to sensorless mode by it self. First 2-3 laps it was fine, after that the car was just crawling, then all of the sudden the Turbo is there again. This happened on and off during 5 mins drive. The ESC and Motor's temp was normal (esc 40C ish and motor 60C ish).
What have we done so far to solve the problem:
1. Change the sensor wire (a few time already which include a new one)
2. Calibrate the throttle (set to 100% during calibrating then bump it up to full 140% EPA)
3. Reflash the 518 stock firmware (twice now)
BUT the problem is still there
Anyone got any more idea on what to do?