Just put in my Jspec engine in my 90TII. Doesnt idle for ****. Also, when you start it, it doesnt rev up right when it starts. It just starts and idles around 400rpm for a couple seconds very roughly and then dies. if you give it gas it will rev up, but wont idle. If you hold the gas pedal to help it idle, it sounds like it has a miss to the engine. Im thinking vacuum leak. Any ideas?