Only when the truck swicthes into 4 cylinder mode and going slow around 30-40 the exhaust was designed for both v8 and for when it is in 4 cylinder mode its only noticeable at lower speeds in 4 cylinder mode Sent from my SM-G975U1 using Tapatalk
I have the mbrp single tip on my 17 sierra and love it i got the black powdercoated one isn't loud when driving normally but when you gas it its rumbles Sent from my SM-G975U1 using Tapatalk