So my 96 integra has a 99 b20z motor swap in it with ls ecu still in it at the moment .. I was told comp didnt matter however I can not pass emissions and not sure whats wrong when there are no mechanical issues.. I replaced 02 sensor in bank 2 which was only code being thrown .. Omce replaced it started throwing othet codes ie. Crank shaft sensor.. Any ideas if its worth me trying to put in b20 computer will it finally throw me correct codes ?

 

On the head, of your motor, there will be a 2 digit numerical stamp. That is the year that the head was made.

What year is is yours?

What is the complete "B20x" or "B20xx" number on the block?

 

b20 b 3547777 hm is on the motor and A008211114

 

Not sure what they mean

 

You can find out what year it was made, if you find the oil dip stick. Look at the head, behind the dip stick and you'll see 4 circles. The circles will have upside down numbers. The 1st circle on the passenger's side is the year that the head was built.

 

You have 2 threads going on about the same thing, you should delete your other thread.