I have a couple of S13 ECU daughter boards for SR engine for sale.
80 CND each.
They make rom tune your ECU possible. Rom tuning is a must if you have MAF or injector upgrade. These boards work for S13, B13 #62, 63 ECU. They can hold up to 4 maps.
I can even install them and tune them to your specification for some extra charge.
PM me if your are interested.