That was a disappointing video. It didn't explain anything about the installation and I couldn't see from the video what was being done. Also what was the result? How lony did the install take. were any special tools required? Did it work in the end?
Tempting due to how cheap these things are. But there's no reviews on them anywhere. Interesting to read your comment that this one started to fail on you. Doesn't make me want to take the gamble.
What size are the exit pipes? I’m thinking of getting the same quad exit diffuser and the opening is 7.5in. So I was thinking of going 2 3.5 inch exit pipes on each side.