Fact : CVT is unavailable in large capacity high power engines.
In fact, it has only fairly recently (last couple years) become
available in smaller capacity cars like the Civic and Lancer.
previously it was available on tiny engines...
The reason for this is that a CVT strong enough for high power/
torque applications is not yet available on the mainstream market.
so, going by this, any radical increase in power would quite likely
affect the lifespan of your transmission rather dramatically...
that said, there's no reson why a CVT won't hold up to performance
mods.. as long as they are within the original engineering
tolerances....
If you want to go faster, lighten the car. a 10% weight saving is
better than a 10% power increase...