Well im new on this and im stuck on my problem with my 91 crx d15b2 just completed mpfi swap and was running for a couple hours but sounded like it started to missfire so i pulled my wires as it was running to find witch one was my problem and pulled my number 3 witch must have been doing most of the work because it died i went to try to start it and noticed my ecu has a soild red light on and car only cranks so i grabed my backup ecu and same thing i tryed to cleaning all my ground but same thing im stuck on what to do next
if anyone has any advice please share so i can try
thank you