Exhaust whistle/leak?

[Damo_Sport]

Hey all

I know i posted this on yozza's section but thought i would try here too

Had my yozza fitted before xmas and about 1-2 weeks after fitment it seems to whistle :S

Some days it doesnt, some days it does.. its deff coming form the back and its only when giving it the full boot over 3-4k rev range..

Any idea if this could just simply be a leak in the rear joint?

P.s its a yozza exhaust from the group buy from december

 

[Damo_Sport]

??

 

[cam_hoof]

i had this with mine and it was the clamp from the middle section to the back box was leaking a bit, try adjusting it a tad it worked for me,

 

[Mike@Rentech]

might be the seal from manifold to cat or as he said above.