If you find Iridium plugs to be too expensive, but wants to have a similar effect thats less expensive, try sparkplug sidegapping, It'll give you a more responsive acceleration and a slight increase in top speed. Click the link below if you want to know more.
Sparkplug Sidegapping (How To)
Note: Works well on ordinary plugs and not the pointed tip ones like Iridium plugs or NGK G-power
