Re pops and bangs....in the late 60's we used to turn off the engine whilst doing, say, 30 mph, wait a couple of seconds and turn back on again. This would result in an explosion in the exhaust. Whilst it was great fun under a bridge and similar, it sometimes used to blow a hole in the silencer.
Have they worked out a way to produce these pops and bangs without damaging the cats etc.?
