I have a new sound coming from the top of my turbo. It only is there when i start up and idle up to 1500 rpm and when its below 40 degrees. It sounds like a vacum sound and goes away after its warm and only between 1500 and 2000 rpms.


I added 4 inch exhaust this summer from the turbo back, could that be the source of the sound ? Its a 99 F250 2 wheel.


Cwhite

Make sure all your intake hoses are secure and tight.

its my ebpv coming on !!!!!!!!!

When I straight piped my old Ford, the EBPV drove me crazy.Sounded really bad,so I finally just disconnected it. I would be at a truck stop,and people would be saying,"whats wrong with your truck"?

What does that stand for.......... EBPV ?

Exhaust Back Pressure Valve.


It is used to add backpressure when the ambient and engine temps are cold enough, aids in warming the engine up quicker.