Excellent- With Wavetrac, when you have an unloaded inner wheel, the Giken will not transmit power across the diff to the loaded one, which happens more than you would think. Wavetrac has a power slider that does transmit this power across to the weighted tire. It happens so fast that I don't even know it happening, just that both rear wheels are fully pulling. What is mind blowing is that with both of these rear tires fully pulling, I have yet to experience a snap oversteer on exit. My front tires are a bit rougher from more sliding, but not enough to cause noticeable understeer.