I have bought a 2002 Civic si coupe with a k20 engine swap I bought it with out the wiring being completed the car runs and drives it will not go over 70km also gages are not working rpm/temp the speed works I just wanted to see if any one could help me and tell me what needs to be done I’m new to this Honda game and would appreciate if some one can school me to what needs to be done thanks

 

There could be a number of issues going on with the car. I would start with going thru the entire harness and checking grounds and connectors as a way of saving money and narrowing possibilities. Then if your not having any luck I would opt for a plug and play harness so you know that all is as it should be and not a hacked (if it is) harness to get the car going properly.