I've tried it now. I think the original sound is better in most aspects. It's not a bad sound mod, but it's not as diverce and detailed as the original. Especially off throttle it tapers off, and tone wise it's quite monotone compared to the original which almost sings a melody up the revs and gears. It is engaging though and still better than some of kunos original sounds.
Keep in mind that imo I am comparing this to the original sound of the car which for me is one of, if not the best sounds of any AC car yet released.