M256 ECU Tune

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All 2020 models require bench flashing at this time.

ECU Tuning Process: How do I get my ECU tuned?

The Weistec M256 ECU upgrade for the inline 6-cylinder 3.0 Liter engines provides substantial gains across the entire powerband.   With an increased yet still flat powerband to Redline, this ECU Tune creates a much quicker, much more responsive yet predictable blast to drive in any situation.


– Increased Horsepower and Torque

– Improved Throttle Response

– Optimized Fuel, Spark, and Boost

– Removed Speed Limiter

*Power gains vary based on model, modifications, fuel, and running conditions.

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