Hi. recently i bought a mazda familia. its a 1993 1.8l dohc turbo 4wd for those who may not know. the car has been driving fine i noticed the other day a louder than normal sound when letting off the accelerator after boosting. i have a pod filter and it normally gives me a flutter sound so its not that. tonight i noticed it again and now after i boosted hard the car stutters on idle and has died a couple times. also the sucking sound under boost is way louder than normal, the car is lacking alot of power under boost and i pulled up at the lights and could smell something bad, sort of like carbon minoxide. when i got home i noticed it was even making the sound on idle (while stuttering). could this be the turbo going? or perhaps a vacuum or boost leak? it sounds like its coming from the turbo itself or somewhere close to it.