Im guessing its your hicas engine ore busches thats the problem... sometimes the engines get worn and gets wobbly..getting ride of mine and going hicas removal bar. =)
Here in sweden we absolutle love the E85.
As an exemple we got a friends R33 gtr making 1119 hp in the engine and 931 whp.
I´ll check what comp ratio he´s using and get back to you all. perhaps i can find how thew but the ingnition to.