Unless you're running stupid-crazy amounts of hp, stick with the stock ignition system. Mazda engineers get paid big $$ to figure out what's best in this area, and it's an area that's hard to improve on. They know damn well that it has to be fuel efficient, make reliable power and produce few emissions, so they chose the wires and plugs appropriately. If you want looks, that's a whole differenst story, but there's absolutely no power advantage to aftermarket plugs and wires. As long as there is enough spark to ignite the air/fuel mixture, and your car isn't misfiring(which you wouldn't be able to tell anyways), there's no advantage to having 'more' spark. People who think they have better throttle response....it's just psychosomatics. You think it's giving you an advantage, so it feels like it is. No different from when I installed my RX7 AFM and it felt faster, even though it was down 7whp. I tuned it on the dyno and gained 10whp.