@ Enzo T'was a good read that. Pm'd you for the extra info! Thing is, when I do get a Glanza, I'm probably only going to be doing up to stage 1 but I read on the tgtt forums about boost creep. Wouldn't increasing the volume of air being sucked in and the volume of gases exiting cause extra strain on the turbo/waste gate? Would that mean I'd have to upgrade the wg/turbo? I'm totally clueless on turbo engines and the jargon behind them.