Yes, I have tried the standard ignition, a lightened rotor in total loss mode and a Tyga total loss. The Tyga one is best, plus it's much lighter and therefore gives the crank an easier life at high revs. I use the Tyga rotor on my dry bike and the lightened standard one on the wet.

A second a lap improvement, no. If you could buy a second a lap for £80, racing would be no fun. The rich would win everything.

Cheers

Dan