Depends on the track size and your car's driving character. You didn't tell which motor you have. D3.5 or kill shot?
For big open track you can set FDR lower to achieve more top speed, for small technical track, you may want the car with more acceleration out of conner, higher FDR will be good to go.
For open big track, FDR to around 4, motor timing to 50 degree is the starting point with kill shot motor.
Small tenical track, FDR to 4.5 to have a try. Watch the temp. Keep it under 70 C.
D3.5 motor can suffer higher temp than kill shot motor.
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