HELLO HONDA-TECH COMMUNITY. I AM NEW TO THE COMMUNITY AND I JUST WANTED TO ASK FOR SOME ADVICE REGARDING A JDM F22B SOHC VTEC SWAP INTO A 94 ACCORD EX. I PERFORMED THE SWAP AND THE ENGINE TURNED OVER IMMEDIATELY. CAR STARTS FINE, IDLES FUN WHEN COLD, AND RUNS FINE WITH VTEC KICKING IN AROUND 3 TO 4K RPM. HOWEVER AFTER RUNNING CAR FOR ABOUT A MILE OR SO THE ENGINE WILL NOT IDLE PROPERLY. ALL SENSORS, SOLENOIDS, AND VALVES ARE CONNECTED AND I AM RUNNING THE 94 ACCORD VTEC ECU (SAME CAR CAME WITH FROM FACTORY). CAR HAS THE JDM DISTRIBUTOR AND EGR SOLENOID. ONLY MODS ARE A CHEAP EBAY HEADER/ EXHAUST SYSTEM. I WOULD REALLY APPRECIATE ANY INPUT. THANK YOU

 

Welcome.
On your next post try turning off caps lock and using traditional capital letters to start a sentence.
Hitting the return button helps make your post easier to read as well.
I'm really not trying to sound like an ***, but know for a fact a lot of members took one look at your post and decided reading it just wasn't worth the effort.

Now about your issues.
Could you describe the trouble you are having at an idle once the engine is warm?
Does it sound like its surging, or continuously hold at a high or low rpm?
Is your MIL on, if so what code is it?

Idle problems can be caused by a variety of things from low coolant to a dirty idle control valve.
I'm not terribly familiar with the jdm varient of our motor but assume it must use a similar iacv system or you would be throwing a dtc for the iacv not being present.

 

My first guess would be a possible exhaust leak. I hope you didn't use the cheap ebay exhaust manifold gasket.