I ran the V200 firmware and found that sensored only mode wasn't smooth at all and the turbo can't rarely be used as unless you are racing touring cars or have a stupidly long straight.
I was at Worksop and the speedo was over heating in sensored mode only. I put it back to V198 firmwave and back to dual mode with all the timing adjustments set at zero and it was amazing only 4 LEDs on the speedo.
If the car is sluggish then the timing is too advanced all you will do is suceed in wrecking the rotor with the heat. (When you hold the cursor over the slider bar ir warns you of the side efffects which is more timing less torque.)
Run the speedo in dual mode and make sure all of the timing is knocked down to zero (timing boost in sensored mode and timing advance in dual mode.) and you'll get all of the torque back and excellent top end.
As for the timing adjustments I would definately leave it at zero on the ESC for all motors and only adjust the timing on motor if the motor is designed with adjustable timing which the Novak isn't.
People seem to think that they can crank up the timing and they will go faster but you can't without losing elsewhere.
more timing = more heat

too much timing = motor fade and internal damage
I think the Tekin speedo is the best arround at the moment, people just need to understand how to adjust it properly.