Da swap from b18 a1 to b18 b1
07-18-2009, 07:03 PM
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Re: Da swap from b18 a1 to b18 b1
07-19-2009, 07:32 AM
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Re: Da swap from b18 a1 to b18 b1
You need the conversion harness,the ecu from the B18, and change the wiring going to the distributor the instructions came with my conversion harness for going OBD0 to OBD1.
07-19-2009, 07:45 AM
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Re: Da swap from b18 a1 to b18 b1
DA's are OBD0? call me retarded if I'm wrong, which i probably am, but...I thought DA's were OBD1
07-19-2009, 08:30 AM
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07-19-2009, 11:46 AM
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07-19-2009, 08:05 PM
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Re: Da swap from b18 a1 to b18 b1
I'm assuming by your sig that your DA is a 91...
Whether you want to have the car obd0 or obd1, use the engine harness from your car.
If you want to keep the car obd0, use everything off your b18a and put it on the b18b. This includes distributor, intake manifold, injectors, exhaust manifold, alternator, etc. The only thing you should have to do for wiring is extend the wires for the fan switch, which is on the thermostat housing on the b18b instead of the back of the block on the b18a.
If you want to convert to obd1, use almost everything from the b18b and get an obd1 jumper harness and obviously an obd1 ecu. You'll need to rewire the obd1 dizzy or get a jumper harness for that too. If you want to use obd1 injectors, you need to get rid of the resistor box and solder on obd1 plugs. You can reuse the obd0 injectors if you don't want to mess with the wiring, there's no difference in performance. If you reuse your original alternator you won't have to rewire the plug. You'll also need a 4-wire o2 sensor.
Whether you want to have the car obd0 or obd1, use the engine harness from your car.
If you want to keep the car obd0, use everything off your b18a and put it on the b18b. This includes distributor, intake manifold, injectors, exhaust manifold, alternator, etc. The only thing you should have to do for wiring is extend the wires for the fan switch, which is on the thermostat housing on the b18b instead of the back of the block on the b18a.
If you want to convert to obd1, use almost everything from the b18b and get an obd1 jumper harness and obviously an obd1 ecu. You'll need to rewire the obd1 dizzy or get a jumper harness for that too. If you want to use obd1 injectors, you need to get rid of the resistor box and solder on obd1 plugs. You can reuse the obd0 injectors if you don't want to mess with the wiring, there's no difference in performance. If you reuse your original alternator you won't have to rewire the plug. You'll also need a 4-wire o2 sensor.
07-19-2009, 09:29 PM
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Re: Da swap from b18 a1 to b18 b1
you would have to convert it too obd-0,if your da is 90-91 if it 92-93 obd-1 plug n play only thing you will need to do if your useing the 94^ intake manifold is extend the map sensor wire
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