HighCountry91

Do you know someone that has done it? Would like to talk to them. The idea of moving the valve sounds like it would work too.

Do you have a truck with the NPP active exhaust? Just bought a 2024 High Country 6.2 and it has an active exhaust. Trying to figure out what I can do to swap a muffer on.

Have you tried this? Want to see if it's possible before doing it

Have you tried this?

Did you ever find a fix for this? I have active exhaust also and was thinking of swapping the muffler out or doing a catback

Looking for 2016-2018 Sierra headlights. Sle all terrain, slt or Denali. Thanks!

Located in Canada. Blackbear Autocal V2 for sale Has 6 slots left. Was used on 2016 Sierra 5.3 and a Corvette. Switched to a diesel so have no use for it $250 CAD

I have a black bear tune so I don't have any v4 drone I highly reccomend it. Welding was the best option because I don't want any leaks

I looked at videos and don't find it very loud

I just welded in a 3" single in single out super 10. I'm not sure but it seemed like the Mbrp straight through performed better but the super 10 is louder. If I could find a straight through as loud as the super 10 or louder I would switch to that for sure! I've heard of people with dynomax bullets but couldn't really get any reviews on them.

i have a 2016 sierra 5.3 and switched the muffler from my MBRP cat back to a super 10. seems like I've got a loss in mpg. does this make sense?

Went with super 10! Seems louder than the previous MBRP that I had but haven't been outside the truck and got someone to drive by me yet!

Anyone running Slp Loudmouth 1 on their 5.3?

Sounds good!

Loudest muffler for 2016 sierra 5.3 with 3" stock exit exhaust? I've heard dynomax bullets, flowmaster 10 and slp loudmouth would be the loudest. Anyone have any reviews?