Can anyone think of any downsides about gutting the mufflers?
Well if it's anything like mine....
1) There may be a resonance. You can learn to drive round it and / or revel in it as appropriate.
2) The overrun may sound like a small war is breaking out
3) People will pull along side you on the A406, wind their windows down and ask you to show off a lot. Then they'll tell you how much they love the sound.
4) You may find yourself grinning like a total idiot when it downshifts and sounds like you're doing 150 round Silverstone when in fact, you're parking at Tesco' [1]
Can *you* handle it?
[1] I'd rather have typed Waitrose but it's too far away
C