94 integras dont have scanner ports, they are not obd2 so you cant just plug in a code reader and scan it like the newer ones with the port under the dash. pasenger side kick panel, 2 pin plug, create the circuit, read the code on the dash, yea there flashing codes that you have to count but its very simple to read and look them up. i ran hondata s100 on my car for a while and was not very pleased with it. either get the new shit or do chrome or uberdata cause alot of people are having alot of success a whole lot cheaper than hondata.