ec pulley is comparable to the c3 65mm s/c pulley so no bearing upgrade is needed. i run the same setup in a fluidamper 178 and a c3. what you will see is fuel pump pressure drop at wot and the need for larger injectors to ensure no lean conditions. approx 20 psi boost in hot weather so far but the colder temps of fall will inc. boost and the need for a retune for the leaner conditions.
you will also see 40 to 50* higher iat temps when running the car at wot . temps rise very quickly.