I enjoy my ART pipes on my with my FI exhuast. The sound is deep on idle and the low end. It'll scream down the road at higher speeds/rpm's. The hiss on decel is there but its barely noticeable to me. There's some rasp in there too but its under the exhaust note itself so its hardly noticeable also. At least to me it is.
This prob doesn't help much but this is FI Carbon Fiber exhaust 12" resonators and the Motordyne ART pipes.
https://www.youtube.com/watch?v=QCtFg4p6mQc