He also said his knocklink was going off and he missed/ignored it. That meant his guages told him he has a problem, he just didn't react in time. He also has a lot more mods that your average unichip user, and was still running the stock injectors.
So unless you have a uppipe, turbo back exhaust, and a bigger turbo, you are not maxing out you stock injectors YET. If you already have all of these, you need to upgrade from a uni-chip to something like a MOTEC or a Link ECU as well as running larger injectors or raise fuel pressure.
Just depends an how much power you wan't and how many mods you do before the unichip needs to be replaced with a more serious engine management system.