[SoSloSoLow]

Its kinda like an exhaust leak but i have looked everwhere for it at first I thought it was my header gaskets but it wasnt and seem to get worse u can walk to either side of the truck and here it, if u lift the hood its like its comin from the valve cover any ideas?

 

[xtremer-pxl]

mine does that to...I have heard alot of them do it...I haven't really worried about mine...

 

[SoSloSoLow]

yea i know alot do it but most i have heard do it from the start mine just started in the last 2 days and has changed its tone like 4 times