I don't get why all the hate?
When at Silverstone watching the drifters, it's awesome hearing them go round bouncing off the limiter/shifting down to hear those bangs.
(it's not so much huge flames I like, as there just form those daft eBay jobbies BM linked)
The only time this gets chavvy IMO is when they pay £200 to have (i have no idea what it's called) this thing installed, that when then rev's hit (random guess) 7k that it emits a bang. Because that's not actually the car doing the work, that's just some junk that's been installed.
I think it's just nice when you've been on a long motorway journey, engine and cars is all warmed up, you come off at the slip road, down shift and your car burbles with the odd bang here and there.
Each to there own I guess.