Added dual pipes to my single piped 379 peterbilt

Not yet buddy, with these pipes putting straight up, it should I’m theory get rid of all the noise in the cab. Most of it anyway. If not, I’ll get those inserts. I think I saw they were like a 100 bucks a piece

 

well i finished the truck and it is super quiet now in the cab and mostly outside. but obviously outside it still has a nice bark to it. Running these pipes straight up in the air with longer stacks obviously made a world of difference. so there is no way i would want it quieter or louder with this setup. just right in my opinion. heres a quick video. havent taken it out on the road yet to get some jake sounds but maybe later