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Nice test with a spare turbo. What are the graphs of. Requested vs actual boost? Oh I see. It’s boost vs rpm. Your fist test in the DIS was of a turbine switchover. To me it shows a tired pressure converter. You can see in a video how on release the rod does not move back quickly. Your graph confirms it. Your boost falls off on switchover. At 3000 rpm you should be full LP turbo. Also to check is the compressor bypass. At this exact rpm it also opens.
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