its called turbo bark... something to try and avoid but nothing to be too concerned about.... it is the air surging in your turbo with nowhere to go.. maybe someone can chime in and explain it a little better...
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early '04 2500 4x4 QC shorty slt 305/555 3.73's nv5600 6" lift w/20" akuza's in 35" nittos, S.C. flashpaq, valair clutch, tailgater switch, stock pipe w/4" bullet & 5" tip, left the intake baffles and silencer ring at home..
