Ignitor III Adaptive Dwell Control Multiple Spark by PerTronix. With Digital Rev Limiter. Ignitor III ignition module is designed for the serious performance enthusiast who demands serious power. You have seen the performance increases the Ignitor and Ignitor II series of electronic ignitions have brought. Now get ready for more 5 times more spark energy than a typical points system. Ignitor III modules provide ignition box performance without the "box"! For the maximum Ignitor III benefit, select one of Flame-Thrower III or HC ignition coils. If you appreciate value, nothing else comes close to this superb PerTronix product. Backed by a high level of performance, it leaves behind all its competitors.