I am looking at getting a Scotty II and wondered if the noise from the exhaust brake is going to be a lot louder with the Scotty II. The stock air box seems to resonate at the frequency the exhaust brake generates and is very loud (now that I cut holes in the box).

 

It'll probably be loud with the Scotty. I don't know anyone running both on their trucks. Maybe somebody would chime in. I'll say this, there is a BIG difference between the two modes of the scotty. I prefer the louder one.

 

I ran both the Scotty 1 and Scotty II with 2 different exhaust brakes. One brake was a Pac Brake and the other that is on the truck now is the US GEAR D-cellarator.
It may be a little louder than with the stock box but not much. I think the benefits of the Scotty Air system out weights the small amount of sound you get over the stock box.
My whole family can sleep during a long trip with the Scotty II doing its thing...so it must not be that loud..

Rick

 

I have the Scotty II with the cowl hole & a Banks exhaust brake. I didn't notice any increase in noise from the brake, just the turbo. But I can't even here that over the stereo.

 

I have a Pac-Brake and the Scotty Air II unit. The Scotty unit amplifies the beautiful song of the turbo, (HX35\40) but has no affect on the exhaust brake at all.

I could tell no difference when driving it with or without the Scotty unit in regards to the exhaust brake noise.

 

i'm curious as to how loud the scotty 2 is in the cab, i like it loud, but am thinking about long term trips. Is there any way someone can post an in cab sound bite

 

It's really not that loud. Imagine a faint whistle and that's about it.

 

Well... Looks like I'm gonna get one! Thanks to all who replied.