im putting a 91 4 door together for a friend and its dual port. i m not very familiar with the older civics...so i hooked everything up and it started just fine then when it got to temp it started surging, kinda like a vac leak except there are none, anyway i was wondering if anyone had any ideas or a pic of the intake to make sure i have the injector plugged in the right way(there a green plug and a brown plug) im wondering also it it could be the iacv? let me know what you guys think!!

 

i mean dual point sorry guys