have OBD1 swap.. how hard to change to OBD2?

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JHBshortie

Junior Member
ok, i have a 92 civic cx, wit a 94 b16a sir2 swap (OBD1). i've had this swap for 3 years, and am lookin to upgrade to the b18c5 which is obd2. can i use my old harnesses from the first swap? or do i have to change them all over to the obd2 harnesses. can i use my old p30 ecu? anything will help. thanx....
 
if you get a USDM B18C5 the harness for it will plug right into your car
if not you can simply modify your current harness
swap the plugs for:
the injectors
the distributor
the alternator

and yes the P30 will work ... but the maps will be a little off ... i would suggest a VAFC or hondata to correct that
 
the gsr harness will work fine on your c5, the missing things that the c5 harness carries(such as crank sensor) are not needed for your ob1 car. keep your gsr hareness and sell the obd2 harness.

just keep your alt, dizzy and injectors ( or change the plugs)
 
Use the obd1 harness w/ the obd1 dizzy, injectors, and alt and you will be fine.
 
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