Link G4X RX7S6X Plug-In ECU, Mazda RX-7 FD3S Series 6 13B-REW

The Link G4X RX7S6X is a plug-in ECU for the Series 6 FD3S Mazda RX-7 with the 13B-REW. It replaces the board in the factory ECU case, uses the factory loom and MAP sensor, and controls the factory metering oil pump while keeping the A/C, tacho and fuel pump working. It runs naturally aspirated, parallel twin-turbo or single-turbo setups, but not the factory sequential twin-turbo system.

Fits

• Mazda RX-7 FD3S Series 6 with the 13B-REW (Link dates the Series 6 to 1992-1995)
• Manual transmission only

Before you order

• Does not control the factory sequential twin turbos. Plan on a single-turbo, parallel twin-turbo or naturally aspirated setup.
• Manual transmission only.
• Series 6 only. Series 7 and 8 cars need the RX7S7X (219-4000).
• If you keep the factory metering oil pump, it must be set up correctly in the ECU so the engine is never short of oil.
• No onboard MAP sensor. The factory 220 kPa MAP sensor is used, or an external sensor can be wired through the expansion connector.
• Electronic throttle (drive-by-wire) control is not usable out of the box; Link says this unit needs a modification first.
• Compare your factory ECU plug with the header photo before ordering.
• 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

• Metering oil pump control for the factory pump
• Boost control for single-turbo or parallel twin-turbo conversions
• Expansion connector adds two analog inputs, a digital input, 5 V supply and sensor ground
• One CAN bus (CAN 1/RS232 port) for dashes and CAN accessories
• 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: RX7S6X ECU, anti-static strap, USB tuning cable, Link stickers, plug-in manual card, product registration card