Originally Posted by markk
Originally Posted by Azrael
markk there is huge difference between restrictor before the turbo which won't let you get more then 0.5 pressure differentail between sides because of critical air-flow, and restriction in pressurised part of intake system that won't stop you from running even more boost to overcome it. So comparison doesn't seem any good.
not really understanding what you mean here ?
Regulatory resctrictor on rally/race cas is different kind of restriction then standard Cossie elbow or throttle body, or whatever of this kind. It simply imit the amount of air avaliable for the turbo - you cannot exceed critical airflow, at the same time yo can push more air through restrictions like narrow parts of the intake after the turbo, even if it will require much more boost. This makes rally engines very different story.