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Got a 2011-2016 Chevy Silverado or GMC Sierra equipped with the LML-series 6.6L Duramax diesel engine? DuramaxTuners’ SPADE Series LML Tuners can tweak your engine’s ECU to deliver more power and improved driveability. SPADE stands for “Standalone Programming And Diagnostic Equipment,” and it’s able to work its magic by adjusting parameters like fuel delivery and