weird sound from exhaust??

[250rforlife]

ok i have a 11;1 wiseco pistion. stg 2 hotcam, stock bore, and i run 93 octange. i hear this weird noise from the puffs comin out of my muffler. sounds like a echo, or a whirrling noise. its jetted for 70-95 temp. what does this mean? any of that noise conect to to high comp ratio for pump makin that exhaust noise?

[rubbersdown]

does it sort of sound like a hollow or underwater type of noise? If so thats usually caused by a leak between the silencer and the header. Also makes that noise when you run an open exhaust that is too short.

[CJM]

Really need a video, could be anything. Perhaps the muffler packings starting to wear, could be an exhaust leak, etc

[250rforlife]

i just repacked the muffler. still does it. if it doesent affect performence and it dosent mean my motor needs race gas since i put a 11;! pistion in it im not wooried about it.