Optimize the powerplant

Speak to Council member McClure in Vault City to get this quest.

Speak with Feargus, he will then tel you to optimize the plant and give the optimization disk. Afterwhich proceed to Vault City, speak with McClure and run the disk on Level 3 Vault Computer. Return to Gecko and optimize the plant.

If you Optimize the plant, you will get a bad ending for Gecko.