Lack of power

[Alexiskayak_7]

I feel that my G since i took of the boost return pipes is not pulling much as when i had the boost pipes.
I see that the V belts are sliping a little but i'll tight them
I lubricated a little more the charger, might caused problems?
How can i solve them?   

[Alexiskayak_7]

Problem found... Boost leak from a cutted hose.