turbo sounds a little louder

[F-450 HOTSHOT]

I have got a 99 f-450 and when i am driving the truck i can here it sucking in air louder than normal when i accelerate. And blowing out air louder than normal when i decelerate. Is that normal because of the weather it is colder here probably the coldest it has been all winter. I am here in south texas and we dont experience cold weather that often. Probably about five days out of the year. It is about 32 degrees here i know i know lol. Thanks ahead of time for the help.

 

[Tx_Atty]

have you checked the intake boots for cracks?

 

[whatabudro]

It's more than likely the EBPV (exhaust back pressure valve) helping warm the engine. Completely normal.

 

[F-450 HOTSHOT]

I checked them but did not find anything. Thanx.

 

[Wingdog]

Yes, if it is cold it's most likely your EBPV just doin it's job to warm up the truck faster. Does it stop making the "noise" when the truck warms up?

 

[F-450 HOTSHOT]

Now that u mention it i think it does. And that EBPV thing makes sence. Thanks for the help.