Hate posting when searching can solve the question, but here I am posting. Did a bit of searching, and I'm a bit out of the loop because my trucks been running so good and driven so little.

'00 7.3 AT, turbonetics turbo, 4" TBE, 6637 filter. Non-relevant mods in sig.

Turbo upgrade rid me of surge/stall, but now I can stay in it for the whole hill and to be honest, the turbo whine gives my wife a headache. At 60 loaded it's the loudest noise in the truck. Will a different filter quiet this thing down? Remember that the AFE stage II was supposed to be quieter. Friend had the Ford unit and it wouldn't flow enough, even w/ sleeve mod. Just read some about a 6.0 intake mod, would also consider that.


Anyways, appreciate any feedback from anyone who's used the 6637 and any other option. Thanks!

 

no matter what you do its going to whistle or whine..its a nature of all turbo's... getting a differnt more restricted breater will raise EGT's and loss of power...maybe try insulating the cab...or take her for a ride in a truck with a 38R..you think the TN is loud...she will think yours is quite after that..

 

just turn the radio up...or have some conversation time...lol...better yet, just leave the wife home when towing....rotflmao....

x2 on the Garrett...mine don't whine...it whistles....wheeeeeeeeeeeeee...

 

You need an air filter with a sealed enclosure. The Ford AIS will flow more than enough for you especially with the filter sleeve. The S&B is a nice set up too. The 6.0 intake looks to be a nice mod too if you don't mind a little fab work.

 

I have an AIS and it cut the noise in half.
Especially the intake drone.
But I have a stock turbo and it will pull the filterminder to the second notch if I turn the chip to 80HP and floor it.
Third notch is the "replace me" indicator.
I don't know what it will do with a bigger turbo.

 

The AIS should be enough to quiet it down for her, but it *will* flow less than the 6637. You might try closing in the 6637 -- it may also work, depending on how sensitive your wife's ears are. Worse case, you may need to try a different turbo. My van turbo with stock wheel & ATS housing isn't too bad, and I run the 6637! Close it up in an AIS and it would probably pass your wife's ear test. And I can't make it surge, even drivivg it as hard as I am. I'd put that combo pretty high on your list if a closed air filter doesn't do the trick...

 

OK, guess I'll try to build a box for the filter to insulate some noise. Changing the turbo is not an option, she'll deal with the whistle before I have to deal with a damn turkey under the hood again.