Tuning a vehicle with E85 can be a tricky proposition as most E85 pumps say right on the label "minimum E70". If the fuel at the pump varies in ethanol content by 15% or more, your air fuel can change by half a point! Take the guesswork and testing out of the system by tuning your car with the use of an ethanol content sensor and the Hydra Nemesis. Tune 2 maps at 2 different ethanol content levels and get seamless running with linear interpolation between those tuned maps.
Optional: Add AN adapter fittings to the GM style fuel line couplings.
Note: Recommended to install in the return line of the fuel system to not impede flow to the rail.