I gotta be honest Scott. I do not see much of a gain with E85 on your car N/A based on the compression. Now if you were running 13:1 compression or spraying a large amount of the zesty sauce then I would say go for it. The only reason I push for E85 on these Supercharged 3800's is because of the HEATON being non intercooled.
Time for E85 and another 30-40 hp.
(I have spent way too much time playing with these 3800's)
On another note. I am this close to putting the Z on a steady diet of 100 octane.
Not bad power for 6 pounds of boost.
http://75.180.27.125:50001/Dyno%20Graphs%20and%20Pictures./Dyno%20Graphs/Chad%20Roberts%2099%20Cobra%2008_12_09.jpg
Setting your Speed limiter to 25 mph, Rev Limiter to 1500 rpm's, and making all of your timing after top dead center.
Shoot me a phone call tomorrow. I am thinking thrusday in the morning before I go to Kilkare.
J/K my friend!!
http://www.nestreetriders.com/forum/attachments/general-bike-related/4545d1097897312-kawi-12r-vs-suzi-busa-vs-yam-fz1-hellokittybusa.jpg