New Style SST27SF512 Chip (64k)

64K EEPROM Replacement for OBD1 Honda ECUs (Dual‑Map Support)

Upgrade your tuning setup with this modern alternative to the discontinued SST27SF512 chips. This version features 64K memory capacity, allowing storage of two separate maps for use with on‑the‑fly map switching. Built on a PLCC32 EEPROM with DIP28 adapter PCB, it’s a direct drop‑in for OBD1 Honda/Acura ECUs (1992–1995).

• Supports dual maps (ideal for high/low boost or pump/E85 setups)
• Compatible with standard OBD1 chip sockets
• Requires a chip burner for reading and writing tunes
  

A reliable, high‑capacity alternative for enthusiasts looking to expand their tuning options.