Screww fuel preporator I will be taking mine off and putting the FASS back on. BTW I have had all three prep, fass and air dog. The air dog and preporator are gone. I called them to day due to my truck being down with clogged filter and asked if there was a cross over # for a filter I could buy local today right now. I was told NOPE cant give you a cross over number you have to buy the filter through us. I am unhappy with them. Fass would not have done this. **** ekstam and the preporator air dog... ... .....
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