Help with injector flow rates with ESS SC

[irokwrx]

Ok I was looking into some options of running a e85 mix. After looking into it the question came up of what size injectors do I have. Good question! I gave ESS a call and told them Hey I have the G1 kit and need to know the flow rate of the injector....No problem...give me a sec ....Ok sir the injector specs are 39lb and 390cc I thought to my self this is sounds king of low (LET'S BE CLEAR I HAVE NO CLUE! That's why I am asking here) and he said the injectors are the same on the 590,625 and G1 they are different on the 650. So my question is does that sound right? Also, I see some are mixing E without any controller isn't that pushing the fuel system to the limit. I was also told I could install larger injectors but will have to update the fuel tables (Is that possible with a ess tune since its locked). I am in need of some advice. I don't want a full E85 tune due to the lack of stations in my area and don't want to be switching maps at stations every time I want to run e85. I can see something going wrong. This is all new to me and I want to try to understand it a bit more.