ok i just finished a motor swap a mpfi engine into my 90 civic hatch. but it has a power lack? and wondering why? maybe bc the egr sys is not hooked up? it is also poping up the ecu code 9( cylinder sensor) and 12 egr lift would these codes make the car run weak. could another possible cause be the throttle cable? thanks for any info

 

which engine? - which ECU?

 

d15b7 with a pm8 im going to change to a pm6 soon so that should stop the code 12

 

Its all in the wiring when you do a dx to si motor swap persay, they make sub-harnesses for like 50 bucks to make it somewhat easier on you. Good luck.

 

yeah i know they make them. but i already did the swap. thanks for the help