Andrew Stewart wrote on Wednesday, March 18, 2009 - 11:57 am:that is a really good question, i think one of the main differences would be the airflow readings as the VVT-i 1j is airflow meter controlled compared to map sensor controlled. but as for the rest, i don't think so. do you have a connector in the drivers foot well, over near the little light. that is where the OBDII port sits.