Why you think BV50 exhaust side cant flow 330hp ? When i see BV50 on first time years ago i think that too, but like you know this turbo is used on Porsche 997tt engine, i compare both turbos and shaft and compressor both are same, with stock turbos Porsche max out them on 570-580hp(3.0tdi max out its on 290hp) but when you put hybrids(only compressor wheel change without exhaust side mod) same car made 650hp easy. Some monts ago guys in France made such car with LOBA BV50 hybrids and reach 700hp easy on their Dynostar dyno. LOBA use 2383 billet wheels on their turbos.As stated above the compressor seems to be flowing quite some airmass, but downside is, that it is hard to come by some bigger VNT turbine to match the compressor. I am quite sure kkk bv50 turbine will not be able to flow 330bhp.
I dont compare them, its all about airflow and same turbo made almost same power on both engines when its maxed outYou can't compare diesel with gasoline ;-)
Like you know turbine side have flow chart/map too, with stock turbo configuration with stock compressor wheel turbine side is not on its flow limit, so it can flow more gas. Unfortuntely for BV50 there is not available turbine flow chart and to see where is the limit you need to test. Fortunately BV50 hybrids are not new on tuning market, and there are a lot of results with them from different companies. I spoke with TurboDynamics UK and LOBA DE and both tell me that in the past they try to clip turbine wheel on BV50 hybrids, but dont reach difference in power only difference in lag, so they decide to dont done that because of no reason, such opinion have USA companies who made hybrids like Blouch turbo in exampleMaybe I understand something wrong.
But: If you make a hybrid bv50 by changing compressor wheel, how can turbine flow more then?