So, had the Glanza only 4 days. But, the HKS Silent Hi Power is not cutting the mustard. The thing is shiny as fook and looks literally brand new. I'm awaiting a decat in the post to hopefully see if it livens up the exhaust but im not holding my breath. I'm just wondering why would it be so quite? - I know the clue is in the name, but I've heard a few in real life which are considerably louder? Would this be down to a completely stock engine setup and standard boost? Would a decat make any difference to the sound of it at all? Thanks