The turbo seems to have folded (- Toyota MR2, 2.0 liter, 1991

on takeoff yesterday they tried to boost with a Chinese mechanical controller, as a result, at 1.1 (judging by the display), something puffed and the speed dropped.
a minute later, white smoke from the exhaust all over the lane.
all the oil went into the intake through the turbocharger ((
we’ll take a look and look like we’re looking for another one ...
in the process of dismantling the pipes and the intercooler, a fair amount of oil drained, after draining the oil from the intercooler through the filter, chips remained on the paper

there was no doubt:

the culprit was a small nut that got into the intake in the process of inattentive or I would say negligent on my part to collect the intake to the compressor.

an autopsy showed the shaft just broke off along with the compressor wheel ...
the turbine wheel remained on the shaft and rotated freely.