I have the Fujita installed on my car for a little over a week now.
No experience with the irregular revving or stalling or uneven power band that people or speaking about. I think someone even mentioned a sulphur smell -- not happening on my install. In fact it actually feels like the car is faster sometimes - but I think that's just the sound. Definitely no noticeable decrease in hp at any rpm.
Personally it's a little too loud in my opinion - especially the little rumbling sound you get at lower rpms so I'll probably be throwing it up on eBay.
