Thread: K&N Series
View Single Post
  #9  
Old 04-04-2010, 08:40 AM
jamesb0 jamesb0 is offline
Dodge Ram Forum Member
 
Join Date: Jan 2009
Location: Norwalk, CT.
Age: 50
Posts: 154
Gender: Male
Vehicle: 2006 Ram 2500 Quad/ SB / 4x4
Trim Level: SLT
Color: Flame red
Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
Rep Power: 0
Rep:57
jamesb0 will become famous soon enough
Default

The 57 tube increases the air flow velocity by reducing the diameter from the filter down to the intake. The 77 is a constance diameter from the filter to the intake.
Reply With Quote