Quote Originally Posted by Kevin99543 View Post
i have a civic eg5 with a d16 sohc vtec engine. if i put a b16a2 into a eg5 do i need to change harness? or i can keep the harness just change a ecu?
I've just done that exact thing

You can as I have but need to wire in the knock sensor and 4 wire 02 sensor to the ECU that cames with the motor