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Compressor surge is when you chop the throttle and the turbo is still moving so much air that it blows backwards through the compressor. Its usually a fluttering whistle type sound.
Diesels arent too bad for it since they dont have any sort of throttle body but it is still entirely possible to have compressor surge on a diesel. My HY35 will surge, but only from a 45psi throttle chop (shift) and even then it only does it sometimes.
Diesels arent too bad for it since they dont have any sort of throttle body but it is still entirely possible to have compressor surge on a diesel. My HY35 will surge, but only from a 45psi throttle chop (shift) and even then it only does it sometimes.