Loud rattling noise when turning on AC

Wabbyy

Good afternoon everyone,

I am the original owner of a 2009 370z. Never had really any issues with the car until about a week ago. Lately the car has made a weird rattling noise while in park and in drive. It usually makes a noise while slowly giving the gas until about 1k-1.5k rpm's then it goes away. As I did my research, i was thinking that my flex plate was going bad. The thing that doesn't make sense to me is that the rattling noise gets really loud once I turn on the AC. Im gonna take it to the mechanic at the end of this week but was wondering if anybody else had this issue?

Thanks

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Double Layer Tints (5% on top of 15%), Muffler/Resonator Delete, Z1 Long Tube Intakes, Z1 Aluminum Undershroud, H&R Lowering Springs