Actually the twin spark was first used on the 1150s to address persistent surging. The 1200s carried this forward AND incorporated dual o2 sensors to increase sampling, which fixed the surging problems. Cataclysmic converters handle excess emissions.
I guess you could break one if you're a klutz while replacing plugs or adjusting valves but I haven't heard anyone admit
Like I said, mine lasted 120k miles. I would use a ford coil but i'm not going to hack on the wiring to make it fit. Some enterprising soul will make a mint selling bolt on replacements at half the cost of the bmw oem parts.
Finally, when mine went out it wasn't undriveable, it missed under load pretty bad but I could have ridden it for a while.
Originally Posted by Big Steve
I've yet to see a poor person driving a real gas hog......
lottery: A tax for people bad at math