based on the results of other similar turbos id say 300 approx. not many hybrids have been very far past 300, but id say this being 6+6 front wheel it is the bigger of the hybrids out there. boost id go with stock td04/td05 advisement on that front, 1.5bar or so, much more is unusually on this turbo frame. you probably in ideal range 1.3-1.5 bar. Phil