Good info. I have also heard of Gen V Rotors slapping more than the Gen III's??
That's what I've learned. I put mine on BRAND SPANKING NEW with a ZZP coupler, and it clatters and rattles at idle with the cam lope. I've learned to tune it out of my hearing, which I'm told I have a bad habit of doing.
99 Grand Prix old build- CAI, Custom exhaust, HV3, Stage 2 TB, custom tune, ported heads intense s1x cam, headers.
Nothing great Just a small T66 Turbo with a Hv3 On a stock tranny untill i finish the other one.