Yes, just did today.
End result is marginally louder. As U can see from the photos, they aren't really a traditional resonator but more to keep certain frequencies down. I would think they are there to eliminate drone at a particular rpm.
No negative effect though with these removed. I drove under various conditions including on the freeway and there is no drone. Slightly more bass to the exhaust note.
If your expecting a good boost in exhaust note then this won't get you that. A bigger DP will yield a better exhaust note if you wish to retain the OEM muffler.
Hope that helps.
Cheers
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