I haven't installed the Chicane Pulley yet. Waiting to install the pulley,fuel pump,42 injectors,and 90 Maf at the same time. I will get it tuned at the same time also. It is a must!
Contact Joe at Chicane Tuning about the pulley.He says you don't need a new belt. You have to ugrade to a bigger fuel pump when changing the pulley. SVt Focus pump is what is recommended. With a good tune everything should be fine.