I'm converting my JDM 1996 ITR back to OBD1 for boost,

what will i all need? correct me if im wrong.

obd2a -> obd1 ecu jumper harness
obd2 10pin -> obd1 distributor adapter
obd1 b series distributor.

do i need to do anything with the alternator?

also, best place to look for charge piping for a DC2?

thanks.

 

You don't need to change the distributor, just the ECU w/ jumper harness.

 

Alternator should be fine too.

 

I can just leave the distributor and alternator obd2?

friend of mine told me i'd have to change everything back to obd1

 

Well, an alternator isn't OBD specific.
OBD1 and OBD2 sensors in the distributors send the ECU the same info and are interchangeable.

 

You just saved me alot of money, haha was gonna order all the adapters from rywire. now i just need the jumper harness. Thanks man!

 

If your engine and accessories are OBD2 then the obd2-obd1 conversion harness and a chipped OBD1 ecu or standalone is all you need.

 

The main features of the OBD2 motor are a knock sensor, a crankshaft fluctuation sensor on the snout of the crank on the oil pump and a toothed timing belt pulley on the crank, the o2 sensors are slightly different IIRC and OBD1 should only have one o2 sensor pre catalytic converter and no postcat sensor so your OBD1 ecu will ignore the second o2 sensor.

 

cheers, running Hondata S300.

 

and dont forget to get the obd2a harness. Not B. 2000-2001 integras were obd2b. which has a different piggy back harness.

 

all this is true. but the obd1 gsr-itr motors also have knock sensors