The E85 fuel map allows easy ethanol fill-ups without mixing ethanol/gas blends. Just fill up your tank with E85, flash the E85 tune option, and experience the massive increase in power over regular 91 or 93 pump gas. Our 104-octane race gas file has been developed with Sunoco GT260 Plus 104 for areas without or with limited ethanol availability to offer considerable power gains without using E85.

Release an absolute torque monster by combining 91/93 pump gas with E85 to 40% ethanol (E40). This blend creates a safe fuel mix that stays within the limit of fuel delivery for the factory injectors. This E40 calibration produces the total torque output from the twin-turbo V8, producing an exhilarating 893ft-lbs of torque with seat-slamming acceleration.

An ethanol content sensor kit is highly recommended when running E40 ethanol blends. 

The factory ECU calibration is full of regulations and compromises that limit horsepower/torque and dull the power delivery and throttle feedback. IE calibrators re-tuned the complicated boost map programming with advanced strategies, resulting in unmatched power delivery. The throttle mapping also receives a significant rewrite to deliver a linear and predictable throttle feel. These refinements result from months and months of fine details that dramatically improve your control over the car with a much more connected and precise feel.

Exhaust Gas Temperature (EGT) is the measurement of fuel mixtures exiting the exhaust and is used to determine the health of the fuel/air mixture entering the engine. IE engineers have spent countless hours adjusting boost air/fuel ratio, ignition timing angle, camshaft phasing, intake air temps, and much more to develop the proper EGT adjustments for ultimate engine safety without sacrificing power.