FASS Whisper Technology effectively and drastically reduces the sound levels of the Signature Series FASS Diesel Fuel System to a “whisper”while at the same time increasing fuel flow rates. FASS Whisper Technology was in development and testing for over two and a half years to meet FASS Fuel System’s high quality and durability standards.
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FASS 150 LIFT PUMP LML DURAMAX UPGRADE
AirDog Fuel System/Multifunction Sump KitįASS FUEL SYSTEMS DIESEL LIFT PUMP 2015-2016 GM DURAMAX LML 6.6L TITANIUM SIGNATURE SERIES 165GPH (TS C12 165G) with Beans Multifunction Deluxe Sump KitĪ FASS Fuel Systems can be a beneficial upgrade for your GM Duramax LML diesel engine, this is because your Duramax doesn’t come with a factory lift pump like other diesels.