After a few weeks of testing on Photon, here is the latest setting of the SP GT2.0 with stock profile (0528 stock) :
DDRS - 7 (default)
AMTS timing - 3
Boost timing - 8 (max)
Turbo Delay - 0.2sec
Timing punch - 850rpm/degree
My x12 is running a LRP x12 13mm rotor (original rotor was damaged) and final gear ratio at 1:7.09.
After 6min run time, x12 is at 95-105C range under hot sunny day in Singapore BK track.
The single laptime and overall 5min laptime is now closer to what I can achieve with T3/SXX stock spec/x12 stock spec motor. I am happy with the performance for now.
Also tested different setting for DDRS (eg 4 or 5), the top speed improved but the acceleration was not as good with same gear ratio. Changed the gear ratio to around 7.4 but then overall laptime was not as good as the current setting. DDRS is more like ESC operating freq (similar to the KO VFS1 ESC for brush motor), higher freq (lower DDRS value) will produce more top speed but less torque.
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