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Comprehensive Owner's Installation Manual. Motorhome Power. Gasoline: GM 8.1L Workhorse. Test vehicle: 2004 Workhorse W-22, GM 8.1L V-8. Transmission: 5-speed Allison. Stinger Bundle, Power System with AutoMind for use with 2001-2010 GM 8.1L W-Series Motorhome, All, Driver-Side Exit Key Features Optimizes airflow, air density, continuous power and MPG Honors the host vehicle and improves longevity Delivers top gains of +51 hp and +68 lb-ft torque Plus better fuel economy CHROME tip Includes AutoMind 50 State Compliant CARB E.O. D-161-98
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