BLACKTOP 20V 4AGE THINGS TO KNOW BEFORE YOU BUY

What other sensors ought to I look to add over the conventional 4age, inlet air temp in addition to a wideband sensor have been suggested, is there the rest I need to insert? If there is not a patch harness, how difficult could it be for making my own patch harness given I haven't any past wiring knowledge? Cheers PaulI am not very good at outlinin