Agree with Neil, you have destroyed the motor and probably the speedo with it. Total timing using the speedo should NEVER be over 60 degrees, and that's assuming the motor is on zero degrees. Boosted motors must NEVER be on full throttle without a load.
When using speedo timing the motor MUST be set to zero degrees for the 60 degree rule to apply. If you have timing on the motor, deduct that from 60 degrees - 20 degrees on the motor means no more than 40 degrees from the speedo.
Why is it necessary to use any speedo timing in an open-motor class? If you want more speed then isn't the answer is to motor up? I can understand a bit of turbo for the straight (with DCM's caveat that this makes flying more difficult) but I don't understand why one would want to corrupt the throttle feel so badly with a lower-powered motor boosted up. Just my 2p...
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