Well to put simply I would agree with bluefront's statement above, its pertaining to ECU tuning, not actual hardware, like what plugs should I buy, or gap them too, etc. I would expect to see questions regarding changing things in your cars tune.
2011 F150 FX4 Blue Flame Metallic SuperCREW EcoBoost 371RWHP/458RWTQ
97 Cobra Coyote Swap in progress
2013 Focus ST3 Performance Blue-Gone
89 Mustang 5.0 Turbo 670 rwhp-Gone
03 SVT Focus Turbo 326whp/278wtq-Gone