I have a gen 1 busa with a water meth injection system running 17 psi boost. I was riding in boost and afr gauge started flashing and then afr started bouncing all over the place and bike started running really erratic. When I parked bike I noticed that I had some oil coming out the air filter when on kickstand leaning. I need to rebuild the turbo obviously but is it possible to boost the oil coming into the air side of the turbo up the intake and foul up the injectors or O2 sensor or map sensor which would cause the erratic readings? I thought maybe a vac hose came off somewhere but everything looks good.