Originally Posted by 98sst
When the engine gets warm, does it go away? I know my throttle body whistles under some load but it goes away after a few minutes. Thats on my 5.9 though.
Its doing it almost always at the same rpm range.
And it is all after I changed my spark plugs, which required me to take of the CAI. I did nothing else. I am thinking of just getting a new K&N CAI soon.
But seriously, it sounds like I have a turbo on this.