Hello all, I figured I’d get lucky and get some insight from someone on this site. I’m still new to the forum and already have had nothing but great advice and positive vibes from you all. Sooo, I just picked up a pre owned 2015 Challenger Hellcat. This is what I noticed on cold start ups only and it only lasts for about 2-3 seconds and goes away. Once the car is warm it goes away until the next cold start. Does anyone have any idea what it could be. I haven’t been under the car to take a look. I’m not even sure if the previous owner did a mid muffler delete but any thoughts/advice would help. Below is a link to the video I posted on YouTube. Thanks