Do bigger turbos flow more volume of air through the engine? No.
Volumetric flow in an engine is controlled by engine displacement and RPM. The gains from a larger turbocharger come from its ability to flow air more efficiently.
So, at the same RPM on the same engine, a k03 sport and GT-4088 are flowing the same VOLUME of air out of the compressor.
Are they flowing the same mass of air? NO.
Does volume flow have anything to do with performance by itself? NO!
Performance comes from mass flow of air, because it gives you the ability to burn more mass fuel and release more heat energy, which creates pressure, which creates force, which when acting over a distance creates torque, which at a speed creates power, etc etc etc.
Reading compressor maps for volume using pressure is not how its supposed to work. You are supposed to get your volume from the VOLUME FLOW of the engine, then you can use your boost pressure at that volume flow, combined with the compressor efficiency to calculate MASS flow.
Modified by thom337 at 3:45 PM 8-27-2009
Modified by thom337 at 3:48 PM 8-27-2009