Link G4X HC92X Plug-In ECU, OBD1 Honda Civic, Del Sol, Accord, Prelude and Acura Integra

The Link G4X HC92X is a plug-in replacement for Honda's OBD1-era ECU, covering the Civic, Del Sol, Accord, Prelude and Acura Integra applications Link lists below. It fits inside the factory ECU case, plugs into the original loom and comes with a startup map. It reads the factory MAP sensor and suits manual-transmission cars only.

Fits

• Honda Civic DX, LX, EX and Si (Gen 5), 1992-1995
• Acura Integra RS, LS, GS and GS-R, 1992-1995
• Honda Accord DX, LX and EX, 1990-1995 (four-cylinder)
• Honda Del Sol S and Si, 1993-1995, and Del Sol VTEC, 1994-1995
• Honda Prelude Si, 1990-1991, and Prelude S, SE, Si and VTEC, 1992-1995
• Manual transmission only

Before you order

• Manual transmission only.
• Link describes this unit as the one for cars that use the Honda OBD1 ECU. Compare your factory ECU plug with the header photo before ordering.
• The install manual pinout is for a four-cylinder engine, so treat the V6 Accord as not covered.
• No onboard MAP sensor. The factory MAP sensor is used and is good for about 1.2 bar of boost; more boost needs an external sensor on the expansion connector.
• Knock control is not available on this unit.
• Electronic throttle (drive-by-wire) control is not usable out of the box; Link says this unit needs a modification first.
• Honda igniters use reversed polarity: keep the ignition coil disconnected during installation until the ignition settings are confirmed.
• Configuration choice: Standard is the ECU as Link builds it. With E-Throttle Upgrade adds Link's factory modification (part 400-0100) so the ECU can drive an electronic throttle body. Link's HQ carries it out on a new ECU before it ships, which adds about 3 weeks. Link only modifies new ECUs, so an ECU you already own has to go through Link's tech support instead.

Highlights

• Fits inside the factory ECU case on the original loom, with a startup map included
• Runs the factory ignition or an aftermarket coil-per-cylinder setup, with four ignition outputs on the factory header
• Expansion connector adds analog, temperature and digital inputs plus an auxiliary output
• G4X core features: flex fuel, open and closed-loop boost control, dual closed-loop lambda, VVT control, a built-in trigger oscilloscope and 512 MB of onboard logging
• Motorsport functions: launch control, anti-lag, traction control, nitrous control, cruise control, gear shift and paddle shift control
• USB tuning cable in the box; PCLink tuning software is a free download from Link

Specifications

• Platform: Link G4X
• Communications: one CAN bus (CAN 1/RS232 port, per Link's install manual), LTW 6-pin USB tuning connection
• Data logging: 512 MB onboard
• Operating voltage: 6.5-24 V (36 V maximum input)
• Dimensions: 190 x 160 x 30 mm (7.48 x 6.30 x 1.18 in)
• Weight: 260 g (9.17 oz)
• In the box: HC92X ECU, anti-static strap, USB tuning cable, Link stickers, plug-in manual card, product registration card