| Here are 6 different cars...... All of the cars have all breather mods
All of the cars have 500 CAMS
All of the cars have port work on the heads
All of the cars have the cams dialed in. All these cars are very similar in build and tune.
All of the cars are making MAX boost on race fuel. 3 cars with lower numbers are 530 turbos
3 cars with higher numbers are 700 turbos These are the top 3 cars I have for each set of turbos on normal race fuel. I do not have anything more impressive on the low end for 530's, I do have more impressive low end numbers for 700 turbos on E85 and also more impressive on the low end with 700's on Meth. The charts show that with breather mods the spool is the for the most part the same. When the system can breath, the smaller turbo does not have an advantage. The larger turbo has more leverage with the larger exhaust wheel to self feed itself and it simply comes down to how much air the engine can move at a given RPM that limits the low end.
Once the RPM's are higher and the engine can pump more air, the larger turbo takes over.
The Z32 engines start moving air well at 3800 RPM and that is where the larger turbos really start to shine. Because the chart has 6 cars, I will show a chart for torque and a chart for HP. Torque
HorsePower
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