99 b16a in 96 hatch obd1 harness.

drove it around with open header cause the exaust doesnt

bolt up to the header. the car seems to be kinda jumpy, its only throwing one

code for 02, and the idle is at 1500 and it jumps its not a steady idle. any

ideas what it could be?

 

You should check to see if you have a vacuum leak. Even the smallest crack in your intake manifold gasket can cause your engine to 'bounce' when idling. Feel lucky that you only tripped one check engine code!