I believe it makes a difference not a mega difference but a noticeable one.
Its helps the airflow through the engine to be more efficient which can be noticeable in throttle response and fuel consumption.
If you dont understand the tuning of a engine and tuning of the clutch then I dont think you would notice the improvement because they compliment each other.

Sure there is more experience guys that can contribute from a hands on experience or one of the mod specialists.
My 2cents from experiance.