I have a 1991 CRX that I dirt track race with. After a rough season I have started to get it ready for this coming year and hooked up a scanner to the car and received Error Codes 15 (Ignition Output Signal), 17 (Vehicle Speed Sensor), and 43 (Fuel Supply System).

So far I have considered to soak my injectors to clean those, change out the fuel filter, and change the spark plugs and wires. My tachometer also was not working at the end of the season and I am still working on making sure that is wired correctly.

Does anyone have any recommendations for my race car and what i can do to fix these codes? I didn't know for sure if one or more of these codes are because of something that could have been renewed or altered due to being a race car and not a street-legal car. Any help is greatly appreciated!