Flex Fuel Tuning Guide

Flex fuel tuning with MG Flasher enables seamless blending of fuel, ignition, and boost parameters based on ethanol content, ensuring optimal performance across all conditions. By leveraging dynamic interpolation logic, tuners can create calibrations that adjust in real-time, eliminating the need for manual fuel map switching when running varying ethanol concentrations.

Unlike traditional flex fuel systems that rely on static map interpolation, MG Flasher integrates switchable map slots, interpolation with Pump Fuel [PF], Flex Fuel 1 [FF1] and Flex Fuel 2 [FF2] tables, and advanced safety controls to ensure reliable operation at across all levels of ethanol blends.

• Preparing for Flex Fuel Tuning: What You Need

• Understanding Map Blending: How Flex Fuel Maps Work

• Startup Fuel Enrichment

• Available Tables/Maps for Tuning

• Advanced Flex Fuel Logging Parameters

• Safety & Validity Checks

• Best Practices & Avoiding Common Mistakes

• Diagnosing ECA Issues & Ethanol Content Errors

With MG Flasher’s advanced flex fuel logic, tuners have full control over ethanol content blending, safety protections, and performance adjustments. Whether running pump gas, E30, or full E85, this system ensures seamless adaptation with real-time interpolation.

For advanced configurations, refer to MG Flasher’s data logging tools to fine-tune ethanol scaling, fuel trims, and timing maps dynamically.