BeardedGrayRhino

Unfortunately I had the exact issue. My car sounded like a nascar when starting cold. After a few minutes, the sound would go away. It could be heard while accelerating after cold start or if accelerating heavily. I removed the plastic skid plate and didn’t find any visible issues with the exhaust. I had it looked at by two muffler shops and both had same diagnosis; catalytic converter. It wasn’t visibly from the bottom. The repair cost me $800 for the new cat and $200 for labor. Four hours later, the car sounded like new. Sent from my iPhone using Tapatalk

2016 Subaru Legacy 2.5 Limited, 141k miles. Purchased August 2017 with 16k miles on the odometer. Not a single issue! Sent from my iPhone using Tapatalk

Purchased my 2016 Limited 2.5 Legacy 8/11/17 with 16k miles. As of today, 118k with only routine maintenance. Sent from my SM-G975U using Tapatalk

I have not. I think there's merit to high pressure gas burst. After 2-3 minutes of warning up, the sound dissipates. If I step on the accelerate hard while driving, I'll hear a growl. I'm going to remove heat shields and see if there's damage. I'll support once done. Sent from my SM-G975U using Tapatalk

I've got 109k on my 2016. I would expect worn parts but not getting any type of lights on the dash indicating there's a problem. Sent from my SM-G975U using Tapatalk

I've got the exact same issue and is only been happening the last few months on my 2016 2.5. I took it to muffer shop who said it was damage to the catalytic converter and needed a new one for $800. I thought that was b******* and walked out. Anyone try replacing the flex hose see any difference afterwards? Sent from my SM-G975U using Tapatalk