Hey Bros... I read an article about removing the silencer ring on my 2004 600 turbo to get better sound out of that thing and so I did. I was told it would'nt effect performance and that this was something dodge ordered from cummings to keep the whistle down. So I went ahead and removed the snap ring and silencer ring. For several day's it sounded great! Then one cold day i took it out for a spin and the damn thing sounded like a big hoover vacum cleaner from hell. Not sure if it was the cold air effecting it or not...Has anyone tried this or heard of it???? thanx for any info...!!!!
sounds like the same issue I had!