The heat shields on the "Y" pipes have developed an annoying "buzzing" sound that is quite loud. I initially had my mechanic check them. While on the lift with an assistant goosing the engine, he used a large pipe wrench to squeeze them in spots. This minimized the buzz for a time.
A few weeks later while under the car for an oil change I used a pliers to tighten the crimp tabs the lock the two halves of the shields -- this helped as well.
Now, over time they are getting quite loud again (bystanders seem to notice me coming from too far away :D).
So, my question is not what is wrong, but does anyone have similar issues? Is there any way of getting this repaired under my extended warranty? Does anyone know of a real fix for this problem?
Thanks.