Had my Thermals 3” installed recently. Been working hell of a lot so mostly my wife been driving the car and I haven’t gotten to mess with it. She says there’s a rattle on a cold start, not long, then goes away. I’m going to tackle it when I get time off. I would like to get a head start and wondered if people had the same issues with rattling on cold start or just when you start the car. Where are some places I should look? P.S. had a bad experience with the shop cause they did a terrible job. They installed Downpipes and took them 8 hours to do. Even left a O2 looses and wiggling which triggered a CEL. Had to tighten it down myself and clear CEL. Fingers crossed that was the problem lol
