Discus B turbo
You were lucky..some of my most hairy moments in 50 years were with turbos.
first series were after co owner got the fuel lines crossed and pumped petrol into the sump which got it making a lot of noise.
Years later ended up doing a course reversal below 50ft at Puimosson with it making a lot of noise only to find power returned when I cut the fuel off prior to flairing.
designer informed me that there was an airbox mod to solve the over rich problem at altitude..alps..only one half of the engine was producing power.
He was against the starting sequence and had said that the sailplane designer wanted it so contary to his wishes.He wanted one switch and the decompressor.
Whilst a good get me home device not a system to be used if you are in the mire.