Thats all good in theory, except the recharge time never comes close the the total spark cycle, waste spark works fine on turbo/high revving motors, mitsubishi evo's, mazda rotaries etc. The coil recharge time on nissan coils is low due to th compact nature of the coils, not the high revving nature of the motor. If splitfires and nissan coils are exactly the same, why do splitfires run well with more dwell time? I believe that splitfires have a slight varience in the number of coil windings, and maybe wire gauge, but until someone pulls one apart, noone can be sure. There isa fair bit of info about doing a waste spark setup, and i think its a great way around the pricy problems with the nissan setup, just steer clear of the early commodore types, as they are known to have problems, or even better get the msd coils, and you can give them heaps of recharge time so they have a nice fat spark.