[Masteryota]

Ah, yes, the spark should be a solid thick blue arc, anything other than that won't fare well inside the engine. It is always a good idea to have at least 1 back up plug while tuning, and it will likely match the recommendation of the coil. Since the main idea of this posting is more power, then its definitely a good starting point and can be used in conjunction with most other mods, should you choose do them.