S&B intake drone

[Tsgs69400]

Ok, i got my intake on tonight and went for a spin.. Now, i am a fan of some engine noise but this thing is odd.
My ole 7.3 and 6.4 gained a nice tone from intakes.
I hear a drone that comes in and out while driving that reminds mw of the exhaust valve on my 7.3.
Is this just the egr cycling?

 

[dsmracing1]

If your stock still then more than likely it's the EGR cycling...

 

[Tsgs69400]

Yea am doing the ******s this week.. Ill wait to see if it goes away.. Thanks!

 

[sootie]

could be the turbo vane sweep as well