i think what you need to do is describe every thing thats happend with the car... cause your story lines just hopeless to deter what may be wrong!!! the oil feed wouldnt kill the engine only the turbo.. if thats fine then theres something else wrong.. you drove for two days it was fine then the revs started to chase... wouldnt idle as normal.... and cut out.. does the car run like a bag of crap then cut out.... if so your sorry A55 needs new spark plugs... then the noise of something being thrown around when did that happen. bottom ends dont sound like that... they have a knockknock sound not something being thrown around.... somehting loose in the bay?, checked the ht leads and core plugs? is the fluids up to scratch. does the car spew mucho smokeyness out its backside??? i need better details than what you've said....