Thanks again @
arghx7, this thread went a bit off topic but somewhat related. That GM document actually had most of the stuff i was specifically looking for such as turbine speed vs ethanol content to produce the same combustion pressure. After reading all of this and looking at the documents it just shows more and more that tuning E85 with the concept of knock feedback and detonation is more of a blind attempt at tuning. I remember when E85 tuning started I was told that a dyno was really required to get accurate MBT readings as with high powered pump gas cars you would hit a measurable knock feedback wall that you could tune with. But what i was under the impression was that with E85 this technique really doesn't work any more as you can easily push timing beyond MBT and from what you have posted shows a severe combustion pressure increase with no increase in power. Causing severe wear on internal parts. This just confirms the fact that I tell people that E85 isn't just a simple "plop it in" and use the ecu to auto tune out knock. You really need to use some sort of method to find MBT to tune correctly.
And you were spot on with me asking 3 things. I am also still quite curious on combustion time based off density. So regardless of internal strength take the same setup and theoretically fill the chamber to 1Bar with Lambada @1.0, then take the same scenario but at 2Bar and Lambada @ 1.0, In these two scenarios how much is MBT affected?