Thread: Rattle sound from exhaust

I have a weird tin can rattle effect coming from my exhaust. It didn't start untilafter I put on the zzp 3" downpipe without a cat with resonator delete and obviously ubend delete.. I have stock exhaust with delta flow 40 series flowmasters and the sound only happens when I accelerate unless I just hammer it Help Please!!!

It sounds like it's coming from inside the exhaust