Hondata

What upgrades do i need to run a e85 tune on b18b1 engine

This cannot be done with an s100, s200 or with Romeditor.

You will need to upgrade to a V3 s300 and purchase the supported Flexfuel sensor listed at: http://www.hondata.com/help/smanager/fl ... htsub=flex

Do i need bigger injectors?

Possibley, you should discuss this with your tuner.