[duramaxdavid]

and cant figure out where its comming from. I thought it was a boost leak but in the back of my head I thought it might be the tranny. It whistles loud when ive got the idle kicked up to 1800rpms while in park. My fried said it sounded like a tranny whine when he heard my truck on the dyno. Any ideas? ive checked all the intercooler tubes for leaks and couldnt find anything. I had the intake off installing a boost stick. I wonder if its worked its way loose?

 

[05_LLY]

Did it start when u installed the stick, the turbo will whistle much more with the stick installed? What kind of boost numbers are you seeing with your stack and the stick?

 

[duramaxdavid]

The boost stick was faulty and i threw an overboost code so i took it off. I didnt notice the whistle atthat time. I think it came at a later time.