Injector troubles on e85

"I found that the car doesn’t like running in flex mode unless it has some 93 added to the e85."
Sounds as tho the sensor +/- range is not very "sophisticated".
I’m looking for recommendations for a better ethanol injector. Similar issues with the car sitting for a while. Chucks done his thing a couple time now but it’s a band aid. Did you end up w the Bosch 210s? Are they better internally ?

Yes I have the 210's now. Sorry, I cant confirm if they are better internally or not though.