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Review on Range Technology Active Management Disabler by Jacob Diego

Revainrating 5 out of 5

quality and functionality. Works as advertised.

Disables Active Fuel Management (AFM) on GMC Sierra z71 2018 slt 5.3 ecotec l83. Works as advertised and prevents the annoying cylinder from shutting off. Fuel consumption has increased, but not critically. There are also plans to use a trap to avoid pooling in the water inlet, which is also an issue in this series.

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