Quiet Exhaust

I'm sure this has been discussed time and time again, but I'm trying to quiet down my 05 400 EXC. I was hoping the FMF Q4 would help, but they tell me it's louder than stock. Any input out there? I'm running the stock exhaust that has recently been repacked

Thanks/Charlie

Ive tried a couple of different pipes and same on the 250F. The stock one is about as good as it gets. The newer 08 and up pipe that has a triangle profile MIGHT be a little more quiet, but not sure if really is, my ear isnt sure

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