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Old 05-26-2013, 05:41 AM
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Nck Nck is offline
Dodge Ram Forum Senior Member
Join Date: May 2011
Location: Salt Lake City
Posts: 258
Gender: Male
Vehicle: Superb 1998 Dodge Ram
Trim Level: SLT Laramie
Color: White
Engine: 1998-2001 360ci (5.9L) Magnum V8 245hp(standard), 250hp(Sport package)
Rep Power: 0
Nck will become famous soon enough

Check your gasket where the air box connects to the throttle body intake.
Mine made the same hiss when I shut off the engine, and I later found that the gasket was broken.
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