i have a 97 civic ex i put a b16 out of a 99 si in it both are obd2 but the si ecu will not plug into my harness need some info please..

Posting this ^^^up for a friend, Never really gotten into Ek swaps as of yet just EG's...Hes trying to figure out on this...Im gonna say he would have to use differ ecu or something...

Thx for any help later..

obd2a to obd2b jumper harness.