Depends on skills but its capped. Im at ~3700 mining atm, and i get the same units per pull i got back at like 500 or so when the tt extractor maxes.
You sure you can get 40-50 lyst with the tt one? I seem to remember lyst being more like 35 with the tt extractor, oil was more like 50. I know ive never gotten 50 for lyst.
Unless the level 55ish unlocks in extracting skills let you get more per pull or something.
Thats cool if some other skill lets you get more per pull, i gave up wanting that to happen 3000 skill ago.