Let's take a look at some things:
1. We're suggesting an E85 mix with 91 octane or if you have it 93 or heck if you want 100 octane but E85 and 91 mixing.
2. We all know that stock these cars can't run 100% E85, you're actually going to run E30 mix (12 91 octane and 4 E85 actually is E29 - almost 95 octane)
3. These aren't race cars, I don't know why you're referring to them but I do have a 600HP supercharged V8 and previously twin turbo Ecoboost V6 that run on straight E85 from the pump with no issues for long term as well as almost every high HP car around here in Phoenix. Geoff from Full-Race's own Evo makes 4XX HP on 91 and 7XX HP on E85. It works and works well, the car is also his semi-DD.
4. E85 is a great fuel for FI and it's proven on many platforms, pretty much any FI car out there makes more horsepower reliably on E85.
5. What does a flex-fuel car not having to require 91 octane have anything to do with this conversation? The Ecoboost is rated to run on 87 octane as well, should you in my opinion, heck no but can you, sure.
6. E85 has been tested to be good for about a 6 month sitting scenario, here in AZ we don't have the water issues you guys might have back east with the winter cold etc.
Stop saying you're better than everyone else, it's BS.
Quoteguess we will just continue to do things the right way,
You have what you feel is the correct way to approach tuning, which includes only providing a generic canned tune for all customers unless they come for a dyno tune. There are no tune iterations based on log feedback from your customers so you want to stay very safe in your established parameters (I call it a box) that you want to provide for people. If people are outside of those parameters (E85, non-Livernois meth kit, etc etc) you don't want to apply your canned tune to their vehicle.
Other tuners and owners of these vehicles want to do things you don't want to have your tunes applied to, this is fine. Stating that E85 isn't a viable fuel to mix or run is not, it's a proven fuel you just decide not to use it. Heck even Ford used it as a way to get additional octane with a bi-fuel test they did.
How many cars have you tuned recently in your own facility with E85? Have you experimented with it recently? If you're not using it and you won't support it then how can you be an expert on it?
You don't have a leg to stand on as far as background usage, tuning and daily testing just what was relevant about 10+ years ago.
Anybody who has owned an FI car outside of these cars knows it's valid and knows that all the fast/high HP cars run E85 if they have it available.
It's just too bad you guys can't use your incredible resources to provide the additional DI pump and lift pump mods to allow for a plug and play fuel system to support big HP on either gas or E85. Why not work on that instead of disputing what most of us know works and works well.