MG386

Exhaust pipe vibrating against the exhaust tips? Sent from my Pixel 4 XL using Tapatalk

Very happy with the GM performance exhaust on my 6.2. loud deep cold start, great V8 growl when I step on it, but not loud at cruise. Little rumble while towing, but not bad at all. Sent from my Pixel 4 XL using Tapatalk

Went on a great off roading trip last weekend. https://photos.app.goo.gl/wmaTdrK6xDEgJKXU6 Sent from my Pixel 4 XL using Tapatalk

84527234 Sent from my Pixel 4 XL using Tapatalk

I didn't notice any change in noise with the GM performance intake. I've done both exhaust and intake, but I did go for a few test drives with just the intake to see if I could tell a difference, and I couldn't. Ymmv 2020/AT4/6.2/intake/exhaust. Sent from my Pixel 4 XL using Tapatalk

Honestly I couldn't tell a difference with or without the flash. No codes or problems either way. Just my OCD that makes me feel better knowing that it's done and everything working as designed. And it's free, so.... Why not. Sent from my Pixel 4 XL using Tapatalk

I just got this notification today, haven't had time to install yet. anyone else install v148 yet in a 2020? Sent from my Pixel 4 XL using Tapatalk

You might also try using a high quality short as possible cable. I use a 6" cable, and it works much better than the stock cable that came with the phone. Sent from my Pixel 4 XL using Tapatalk

2020 AT4 6.2. I picked it up early December 2019 and check almost daily for updates, none so far... Sent from my Pixel 4 XL using Tapatalk

U could try calling this number, maybe they can check your Vin to see if it was done. Sent from my Pixel 4 XL using Tapatalk

With a little spray of silicone lube on each one, and a pair of channel lock pliers, it's pretty easy to remove hangers. You could probably do it without the pliers. The ECM program flash is included with the GM intake. I drove around for a few days with both intake and exhaust without the re-program and had no issues. Sent from my Pixel 4 XL using Tapatalk

Yup, this is for the 6.2. I kept the resonators just in case I want to quiet it down someday, but scrapped the rest. Thx on the floor, best thing I've done to the house! Sent from my Pixel 4 XL using Tapatalk

I know this isn't exactly what you want, but here is the GM performance exhaust right before I installed it. Notice, no flappers before or after muffler, and no resonators. Good luck. Sent from my Pixel 4 XL using Tapatalk

Agree. Too much safe space, not enough unsecured space. Sent from my Pixel 4 XL using Tapatalk

I have the 6.2 and the GM Cat back. I don't understand what people are talking about with this helicopter sound. I've driven 40-50 and all speeds windows up/down everything, and I can't get it to make any abnormal sound. I'm just curious because I kept both my resonators just in case I need to put them back on to quiet it down, but I don't hear anything. Are you towing while doing this? Sent from my Pixel 4 XL using Tapatalk