Anyone try HMF QRS exhaust???

[prnstr4life]

Has anyone tried the new HMF QRS exhaust setup? my HMF is quite loud!

[OnTheEdge]

I know a couple guys who have them. They are quieter & sound pretty good with fresh packing. The packing doesnt seem to last long though. In a couple months they sound like a tin can from what I've seen of them. Actually on one of them, the grating that holds the packing in, fell apart too. Just my $.02