Mine did the exact same thing 3 days ago! I have the $300 4" exhaust from Summit and I've been thrilled with it until that happened. To fix it I bought a band clamp (example pic here) to cover/seal the hole, then I'll be modifying a u-bolt hanger to replace the missing hanger. I thought mine was a fluke, I guess not!I have a MBRP 4" exhaust system and the hanger that is attached to the transmission broke off leaving a large hole in the exhaust pipe. Anyone else have/had this problem?
I'd take a sawzall to the hanger post before it cracks