High Flow Gas Cap???

Derektoo /

the other day i took off my gas cap while it was running and it made a suction noise and bogged down. (Peugeot 103)

In the photo you see gas cap(black), hole drilled into it(red), and u shaped tubing(blue) creating a kind of breather.

more fuel=more fast or high hopes+cheap mod=total let down?

constructive criticism encouraged..

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