Less may well be more. Higher ethanol content gives a lower autoignition temperature that may not be offset by the latent heat of vaporisation. Combine with higher boost and/or leaner lambda because you are no longer knock limited and you could have preignition.
Jake,Where do you buy from? And does it get delivered?
I buy 5 gallon cans of VP Racing Fuel E98 from K & G Speed Associates, 2343 West Chester Pike, Broomall, PA (behind Nicholas Smith Trains). Call first to make sure they have it in stock (610) 359-1616. Last time I purchased it was about $40 cash ($8/gallon). You may also want the dispensing tube to avoid splashing: VP Racing Fuels 3044 Deluxe Filler Hose https://www.amazon.com/dp/B005G5R5LQ/ref=cm_sw_r_cp_api_i_ubfcBbJY02GJ9
I think VP would deliver the cans, but it’s very pricey.
Thanks Jeff! May need to start doing this or ordering 50 gallon drums. I don't mind picking up 5 gallon cans though.