Lastly, did you change your diverter valve to a 710n? This needs to be done when you chip your car and if it wasn't, if I'm not mistaken, it may be restricting air flow into the turbo thus less air into the engine... Not sure but it's not good. just go do it!

 

Checked the diverter, its'a 710N and it worked fine, blowed in to the hose for the vaccum and air wnt out in the hose that's connected to the front side of the manifold.
what happens in the air pump is crappy?
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