Zonda_ 0 Posted April 15, 2006 Report Share Posted April 15, 2006 Between OBD1 and OBD2 cars? My OBD2 car consistently gets 5-7mpg better than it's OBD1 engined sister. Is this normal for them? Link to post Share on other sites
VR6Pete 1,455 Posted April 15, 2006 Report Share Posted April 15, 2006 The OBDII Engine managment is superior to the OBDI if I remember correctly, so in theory should provide better MPG. Link to post Share on other sites
mightyvr6 0 Posted April 15, 2006 Report Share Posted April 15, 2006 The injectors are timed slighty differently on obd2 and the ecu must be better at trimming fuel. Link to post Share on other sites
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