Iam just trying to find out the difference in the 2 similar turbos, and what one flows more air. The 15C one seems abit bigger, but it was the 15G that took the 15C spot. Is the 15G a better design or something?

TD04H-15G
Compressor
Wheel 15G Inducer 1.625 Exducer 2.187 trim 55
Turbine
Wheel TD04H Exducer 1.735 Inducer 2.042 Housing TD04H-6cm2


TD04H-15C
Compressor
Wheel 15C Inducer 1.654 Exducer 2.187 trim 57
Turbine
Wheel TD04H Exducer 1.735 Inducer 2.042 Housing TD04H-6cm2

I found pics of the different blade setup....

First pic is my TD04H-15C


Second pic is TD04H-15G

 

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the 15G wheel design it better. It is just like the difference between the 14b and 16g wheels. Look at the differences between the wheels. The 15C, is all one length, the 15G is kinda staggered.