Very Audible Turbos

[efx4]

I can hear my turbos spool in my truck (to me, a good thing), but my bosses' F-150 seem to me to be much quieter. I'm curious if anyone else has ever noticed a difference between the 2011 truck, compared to lets say a 2012 or '13 in this regard. I do love this engine. I came from a 5.4 (good engine) to my Eco, and I really am enjoying this powerful little 6 banger.

[cschannuth]

My '13 is very quiet. I can't hear the turbos at all.

[Snowman 8]

I can hear the turbo's on my 2013 plain as day.

[tseekins]

I can hear mine spool as I start the truck but she's quiet otherwise.

Now when I'm going on base and passing the guard shack to my left with the window down, I can hear the turbos.

[efx4]

They are quiet for sure, but louder than I thought. I was just curious what others have noticed.

[EcoboostKev]

The 2013 Eco's actually have bigger turbos than 2012 and 2011. There not much bigger but a little and i have read that they are more pronounced when spooling up.

[efx4]

They have 51mm Borg Warner, and have a nice faint turbo whistle to them. I've hit the gas and given them some boost and people walking have turned their heads, so I know their must be a difference.