turbo problems

[bluelineford]

My Brothers truck is a 05 f250. When he's running between 65-70 MPH the turbo psi's goes up to 12psi and then falls to 8 or 9. Sometimes the psi drops to zero all while maintaining that speed. The truck also loses power about 20%. The dealer said they were unable to duplicate the issue and could not find any problems.

Any Ideas of what it might be and how it could be fixed?

[CT Performance, Inc.]

vanes or controler issues very typical...sometimes will throw a code. Sometimes if it isn't to bad...needing a turbo-controler replacement, a SCT with Cales tunes solved mine.

[bluelineford]

Thanks

[dukcaln]

get the veins cleaned and check the turbo controler

[bluelineford]

Yeah I read another thread of a guy that cleaned his own turbo. I might just try it.

[jlhess85]

I have a similar problem, if not the exact same thing. When my rpm's are low (top gear 60-70 mph) and i try to accelerate slowly (without shifting down). I lose power and blow a ton of black smoke. I have a bully dogg downloader and I returned power setting to stock and it still does same thing. Occasionally it will act similar in 3rd gear - low rpms but not as bad as high gear. If I shift down or get into higher rpms all is well.

Does this sound like a turbo that needs cleaning?
I am not capable of doing this myself. Would it be wise to let the dealership do the cleaning?
Or better off at a different service place?