Quote:
Originally Posted by Railgun
%age in and of itself is not an indicator of performance.
It's neither easier nor harder to compress. It's all about O2/density. Colder air simply doesn't require as much compression.
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WGDC is an indicator of turbo work load. Which is also an indication of airflow. Using it to see if FLOW mods are making changes is beneficial. For instance, if the car is making 23 psi at 90% WGDC.. and then you put catless downpipes and exhaust on the car and now the car is making 23 psi at 87% WGDC, it means the turbos are working less to produce the same air.
Also, if all this doesn't matter how do we explain the dragy improvement? One even in worse conditions?