E85 Refers to a fuel with 85% ethanol content, vs standard pump fuel (91,93 etc) which typically has a 10% ethanol content. Power output between 91 and 93 octane tunes will become the same as ethanol content goes above a certain point.

Table with 3 columns and 6 rows.
Peak TQ Increase29.3%354.1 ft-lb @ 3290rpm vs 273.8 ft-lb @ 2920rpm
Peak HP Increase19.2%322.0 hp @ 5800rpm vs 270.1 hp @ 5510rpm
Max TQ35.5%353.8 ft-lb vs 261.1 ft-lb @ 3340rpm
Max HP34.7%222.2 hp vs 165.9 hp @ 3340rpm
Average TQStock 253.1 ft-lbTuned 308.0 ft-lb
Average HPStock 189.4 hpTuned 236.6 hp
Peak values are measured from the point of highest out put regardless of rpm. Max Values are measured as the point at one RPM where there is the largest difference between both. Average is measured across the duration of the pull.
Created with Datawrapper