boost probem

What's up everyone i just recently bought a protege speed and Love the car but its been hesitating on boost and has a hard fuel cut off at about 6,000 rpms in 2nd and 3rd gear .. Throwing codes for lean mixture and maf sensor .. Replaced maf sensor and saw no difference l.. Please someone help...

Does anyone have a pic of how they hooked up there electronic boost controller to there vac and boost line i cant figure it out... Thank you. 03 mazda protege mazda speed stock turbo.