I am making 700WHP / 700WTQ on my pure 800 on my personal vehicle. I am still polishing my maps and making impovements and working on a full fuel system package to do this. But the short verson is no you cant run full flex fuel on this turbo and fully utillize it. The high pressure pump is too small, and even with port injection the low pressure pump gets angry at times when its rather warm (I am still testing this, and need to get some more concrete data). Even on the stock turbo there isn't enough fuel to fully utilize it on full E85. I usually tune people for E50. For running the Pure 800 if you want to make real power you need a higher density fuel (like 100 octane) or auxiliary fueling. I will be working over time on a package to handle the fueling and full flex fuel support utilizing port injection down the road.Do you know what the hp limit (reliably) is for those pure800s? And what if I added flex fuel to that? Could I run full flex fuel with that setup?