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

What other sensors should I search so as to add more than the common 4age, inlet air temp as well as a wideband sensor are already advised, is there anything I should include? If there is not a patch harness, how complicated could it be to create my very own patch harness provided I haven't any prior wiring encounter? Cheers PaulThis solution are g