Don't do it repeatedly though it and don't do it until your trans temps are at normal operating temperature, like 160-175. It's not the overall torque that breaks cvt's it's the delivery of tq and sudden ramp in temperatures. And with brake boosting in cvt don't immediately slam it to the floor. Floor it fast but not immediately if you get what I mean, it simulates the shift points significantly faster. But boost by gear will help significantly with wheel spin ive only fooled with 1st gear and usually keep it between 10-15psi.