Loudmouth IIs on L99

[iFast]

Tried the search function and didn't see what I'm looking for so here we go.
Looking at getting an exhaust for my L99. Already got a Halltech intake and the sound improvement was very surprising just from that but looking to get a throatier and deeper tone out of the exhaust. Looking at the LM IIs for my car. The only question..... when the AFM kicks in on the highway, is the car gonna sound like crap or have some aweful buzz or drone that it normally won't have when using all 8 cylinders. I still want my car semi quite on the highway. I already have a ZX10-R with an Akrapovic exhaust system that is killing my hearing so looking to keep the car a lil quieter. Thanks for the help guys and if any vendors wanna PM me a price on a set of these I would appreciate it as well!