Think I\'ve got a boost leak?

[McPie]

Right
it start  from first turn, but it don\'t keep RPM\'s

If I use throtle for keep rpm\'s it feels like it a little struglink to burn up everything, thinkg of backfiring, but no fire on low rpm...

it doesn\'t mater cold or warm engine.

I have check for air/vacum leak, all fine
CO2 sensor is fine as well, then I decided to unploag air flow sensor and started car again. Hmmm it was working on 1500RPM a little bit jumping, but working. After I pluged it back the car again do not keep any rpm\'s

Any Idea\'s?