E55 Kleemann Kompressor

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Yesterday i took my 1999 E55 AMG from garage and the car was ready with kleemann kompressor and i tested it for the first time the car sames it didn't get any horsepower.

Then i return it back to the garage and they told me that they fixed the wrong pully and it was only 0.25 bar opend.they will change the pully to a smaller one to increase the bar to 0.45bar.

My question is: Is the pully size control the kompressor boost????? please help

[Monster]

Ok this is what I think. A smaller pully size will reduce the pully ratio between the pully and the supercharger, so now the supercharger can spin faster, thus the pressure is increased from 0.25 bar to 0.45 bar.

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i wish this is correct because i paied alot but nothing changed anyway thank you very much