Advanced Fuel Dynamics ProFlex DXI Adaptive Flex Fuel System (6.2L)
Fits 2020-2026 6.2L V8
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Price tracked 7 times since Jul 28, 2026: low $799, high $799, currently $799.
where to buy · 2 retailers tracked
A flex-fuel system adds a sensor and controller that let the factory ECU safely recognize and adapt to ethanol-blended fuel (like E85) instead of just gasoline, without needing a full standalone tune.
why this one — AFD builds this specifically for the 6.2L (2020+ T1XX), explicitly plug-and-play with "no tuning required," confirmed for both GMC Sierra and Chevrolet Silverado in the product title itself.
Advanced Fuel Dynamics' own product page mentions "significant gains in horsepower and torque when running e85" without a specific number.
Running E85 can affect powertrain warranty and requires E85-compatible fuel-system components downstream; check before relying on this for daily E85 use.
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No published gain figure for this part, and nothing here is a guarantee. Price is a list price and can lag the retailer; confirm at checkout. See our affiliate disclosure.