Transmission control unit for use with B series automatic transmissions when any of our OBD1 Auto ECU's are being used. This transmission control unit controls your automatic transmission functions, while the OBD1 Auto ECU controls engine operation and tuning. This automatic transmission control unit is fully inspected, and the exterior is powder coated for long lasting durability.
NOTE: We HIGHLY recommend using genuine Honda ATF-Z1 or ATF-DW1 automatic transmission fluid with B series auto transmissions. Other replacement transmission fluid will cause many problems with shifting and transmission operation. Only use genuine Honda fluid. All HA Motorsports ECU's, products, and services include a One Full-Year VIP Warranty
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