hi ppl i am looking at buying macs stage 2 kit and wedge and i keep reading ppl on here saying it raises boost to 19psi my question is do i need to run a boost controller or does macs moduel make it jump to the 19psi i live in australia so i run 98 octane fuel, only new to the site but seems everyone here is here to help love the site have learnt so much about my ski from here thanks.