HOW TOYOTA 4A GE CAN SAVE YOU TIME, STRESS, AND MONEY.

What other sensors should really I appear to include about the standard 4age, inlet air temp as well as a wideband sensor are actually recommended, is there anything I need to increase? If there is not a patch harness, how challenging could it be for making my very own patch harness given I have no earlier wiring working experience? Cheers Paul