well let's think about the mix...you NEED more gas upon startup...a device called a thermo-time switch enables the choke~ you may have one of those...a little goodie which measures the air intake...a AIT air intake sensor is at fault...the educated guess tells me~
http://www.frsport.com/OEM-ECU-Temperature-Sensor-SR20- KA24DE-CA18-VG30--Square-Type-_p_27744.html? gclid=CjwKEAjw0KK4BRDCiKHD5Ny8pHESJACLE620HVNrIpl7P5dI8 vh3Ln76GmgkjkaIDRnIzP3ZVJyltxoChh3w_wcB
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