Quote Originally Posted by PatrickD View Post
No known fixes for this though?

Just stinks because it never did it before and out of nowhere it started doing it and it just makes my truck sound horrible.

Whistle tune isn’t as fun anymore.
No known sure fix.

Nothing tuning wise I can do to stop it.

I suppose you could start replacing parts, but that wouldn't be justifiable for the cost.

Ray,
Double R Diesel