PS

Stupid thing is I already knew about a cut causing a fire, thats why when you hit the rev limiter on a nitrous car when you have a coilpack you potentially get a massive backfire, cause it can fire at ANY point in the cylce, where as on a distributor system its actually quite limited how far out it can try and fire as the rotor arm has to be next to one of the cylinders ht lead terminals at the time or the spark has nowhere to go at that moment so it cant happen during the intake stroke for example, which is what causes the problem.