Just a suggestion but it sounds as if one of you vacuum lines from your secondary air pump has a vacuum leak or is crimped. Just my two and a half cents worth...
V/R Zachary Pullins Sr.
National Capital Chapter BMWCCA
NCC Member Recognition Chairman
NCC High Performance Driving School Registrar
NCC Auto-X BOD Liaison
DIY Senior Committee Coordinator
2006 E90 325Xi & 2000 E46 3XXi
" Vision without resources is just hallucination"