No cats, very aggressive sound at WOT...but it is hard to distinguish whether its EWG sound. I love the set up

 

So, I installed the supertrapp diffusers on the dump tubes and it did quiet it down. What was a loud woosh, is now a less loud hiss and less obnoxious. I was surprised by how much of the sound while wot is actually just the normal exhaust, not the wastegate exhaust.
I'll post videos when I figure out how. Not much of a difference listening to it on my phone but I can really hear the difference when I listen to it on my computer.
By the way, the diffusers had absolutely zero effect on boost control. My Greddy logs high boost and there was no difference.

 

Awesome to hear!! I myself prefer to hear the exhaust/engine rather than the insane scream of the open gates.

 

Video of open wastegates

Video of open wastegates with Supertrapp diffusers

 

Wow...quite a bit of difference there!!! Much cleaner sound. Thanks!!! Any pics of them installed?

 

Yes, "cleaner" is a good way to describe the sound. I never think of taking pics during mods but I can snap one of the underside when I'm home. I was lucky that the length and bends of my tubes allowed them to be rotated to an almost horizontal position, so the diffusers are tucked up nicely on each side of the crank case. It looks like they are close to even with the wastegates as the lowest point of the car.

 

Here a few pics from the ground. Next time it's on a lift I'll take some better angled ones.

 

Do you have a part number?

 

I found them at summit racing.com. They're Supertrapp Diffusers. Here's the link
http://m.summitracing.com/parts/SUP-344-1705