Flex fuel and nitrous problem

Hi I have wrx on g4+ running a small amount of dry nitrous to spool a big turbo, followed your tutorial, set up and it works brilliant. Now the problem I have is going to flex fuel, e85ish. My duel fuel an ignition maps are an overlay for the nitrous. So, if I run interpolate between for flex fuel what am I going to do for the nitrous? What's the best way around this? Thanks

Think I've found my answer. 4d ign an fuel activated when nos activated, that leaves tables 2 for flex fuel, is this correct?

Yup that sounds like a good plan. Dual fuel tables with interpolation for flex, 4d for nitrous if not used for something else.