I own a 2014 2.0t at and I’m having this problem where when I start my car and give it little love taps it makes this rattling sound like if a gasket or something was loose. I checked all the exhaust pipes and they’re all fine but when I banged on the down pipe I could hear as if there’s something in there I have a video I’ll try to post. Could this be a bad cat ? Also my turbo has started to glow bright red after normal driving I won’t go past 7 psi but when I get home it’s glowing red and at certain rpm’s I can hear my car sort of make a womwomwomwom sound kinda if you had a v8 but it’s never made this noise before so I’ll post pictures and things but I ordered an o2 housing with the little bit of money I got left I can’t really pay for a tune rn will I be fine like that for a little bit ? Ik it’s a lot but I need some help