My swap is complete. '90 B18A1 in my 89 civic dx. Finally i got the engine to run on its own.....had to replace the main relay. BUT, its idling way to high...... about 2100 rpms. I've hooked all the vacuum hoses as displayed on the integra's diagram under the hood and the motor sounds good. I havent checked the timing yet. What exactly is the little diaphram thing on the throttle body for? It connects to the throttle linkage. Any help?