well e85 is not idle friendly ... my car refuse's to idle on it ... but besides the point
speed density is not that hard to set up i believe dsmlink v3 has a auto tune function that is set up for base tune .. what dose your wide band say. That is your friend . Did you read the manual, it explains how speed density works and how to set it up .
www.ecmlink.com read the pdf on set up its painfull to read and understand but it can be explained