Before I buy a P13 to replace my P28 (I don't have access to dynos and tuning and want to return to stock)

Will a P13 ECU plug into (as in without any problems, simply plug in) my car:

'99 Civic with H22A4
P28 ECU
OBD2-OBD1 conversion harness

Thanks people!!!!!!!!!!!!!! I found a stock P13 ECU for $100 but want to make sure this will work.

 

as long as its an obd1 P13 you shouldn't be having any problems bolting up to your conversion harness

 

COOL, thanks

 

Anyone else notice he said a4 and not a1? correct me if I'm wrong, but isn't the a4 obd2?

Did you have a reason, other than the p28, to convert between obd2 and 1? Seems pretty much a waste of time to me.

Anyways. If you have your car setup as obd1, then all you need is an obd1 p13.