370z rattle tp's plus catback exhaust

[chriszeph34]

Hello I recently bought test pipes ($100) and aam short tail exhaust for my setup. It was suuuper loud but sounded amazing. I then purchased an invidia Gemini catback and deleted the resonators. Around 2k-2.8k there's a horrible rattle that sounds disgusting, when the car gets warm it kind of goes away but is still there. I read that you have to get motordyne ark pipes and the rattle won't be there but they are very pricey, plus the whole resonates test pipes option but I love loud. Any suggestions/help