Rywire OBDO [MPFI] to OBD1 Conversion Package
This package is made for OBD0 MPFI chassis such as the:

88-91 CRX/Civic (Si/HF/EX) [NOT dx/std]
90-91 Integra (all)
It should only be used with your stock engine harness.
You must be using the original engine harness from your MPFI vehicle in order for this to work correctly.

This package contains the:

OBD0 to OBD1 ECU Jumper
OBD0 to OBD1 or OBD2 Distributor Adpater
Integrated VTEC Subharness (no soldering!)
This package is perfect for all D-series and B-series engines.