exhaust ... what material & blowing ?
 

Is the CSL exhaust sytem full stainless ?

I think mine has started to blow, mid way somewhere, not had up on ramps yet to inspect. Just wondering if it's most likely at a joint or not

The flanges rot away near the rear wheel where it joins the back box
there is a guide to sorting it on here

rstoughy
Done a great guide use the search or pm Paul username rstoughy

Could be the little heatshield on the top of the exhaust, sits underneath the n/s diff output shaft inner cv joint.

That or the flanges, for sure.