MaxxECU GEN2 RACE: The Flagship Engine Management System

Quick answer: MaxxECU GEN2 RACE is the top of the MaxxECU range. It runs up to 12 cylinders fully sequentially with 16 injector outputs, 12 ignition outputs, 8 low-side GP outputs, 4 × +12 V outputs and 4 H-bridge/E-Throttle outputs. Inputs are 24 analog, 8 pulse (VR/Hall), 8 native TYPE-K EGT inputs sampled at 200 Hz, dual wideband lambda (Bosch LSU 5.2, 4.9, 4.2) and dual knock. It has a 550 kPa MAP sensor for 4.5 bar / 65 PSI of boost, a 3-axis accelerometer, dual CAN, WiFi and Bluetooth, USB-C at 480 Mbit/s, an ARM dual-core CPU running 3000 calculations per second, and 16 GB of internal logging recording all 2000+ channels at 1000 Hz. IP68 powder-coated aluminium case with Superseal 1.0 connectors, 700 g, 240 × 138 × 35 mm.

Rocket Speed Shop is the official MaxxECU distributor for the Baltics. If you have hit the ceiling of any other ECU, this is where you land.

Who the MaxxECU GEN2 RACE is for

• Professional tuners and race teams. The full-channel 16 GB log at 1000 Hz means you never wish you had enabled a channel before the session.
• V10 and V12 builds running fully sequentially — 12 ignition outputs and 12 sequential cylinders. Nothing else in the range does this on the GEN2 platform.
• Staged injection at serious power levels. 16 injector outputs means primary and secondary injectors on an 8-cylinder engine, or 16 injectors on a big V8 methanol build, from one ECU.
• Methanol and ethanol race engines. Native Bosch LSU 5.2 support reads ultra-rich mixtures that older sensors cannot.
• Engines that need both EGT and knock. 8 thermocouple inputs at 200 Hz (four times the GEN1 sampling rate) wired straight in, plus dual knock — the most complete engine protection package MaxxECU offers.
• Sensor-dense builds. 24 analog inputs and 8 pulse inputs.
• Endurance and rally raid. IP68, Superseal connectors and fully protected I/O.

Key features

Twelve sequential cylinders, sixteen injectors

16 peak-hold injector outputs accepting high or low impedance injectors, and 12 ignition outputs with selectable +5 V, 12 V or ground drive. That output flexibility means the same box drives smart coils, dumb coils, CDI units and ignition modules without adapters.

Eight native EGT inputs at 200 Hz

TYPE-K thermocouples wired directly into the ECU — no amplifiers — sampled four times faster than the 50 Hz on GEN1 RACE and PRO. Drives EGT fuel correction and EGT power cut. On a high-power turbo engine, this is your earliest warning of a failing cylinder. It is also the clearest single reason to choose GEN2 RACE over GEN2 TRACK, which has no native thermocouple inputs.

Dual wideband lambda with LSU 5.2

Two independent channels supporting the latest Bosch LSU 5.2 alongside LSU 4.9 and 4.2. Per-bank measurement on a V-engine, or pre- and post-turbo, without an external controller.

Dual knock and dual CAN

Two knock inputs for per-bank detection. Two independent CAN buses so gearbox control, expansion modules, OEM vehicle CAN, OBDII and dash devices do not compete for bandwidth.

16 GB of full-channel logging

Every one of the 2000+ ECU channels, recorded at 1000 Hz, with automatic start and stop on conditions you define. Combined with the 3-axis 8 G accelerometer, this covers driver and chassis analysis as well as engine data.

Lua scripting

Write custom control strategies and custom CAN communication. This is what lets a race team implement something MaxxECU never shipped as a feature.

IP68 and protected I/O

Black powder-coated aluminium, IP68 rated, Superseal 1.0 connectors, rubber-covered USB-C ports, integrated WiFi/Bluetooth antennas and a status LED. Every input and output is protected against overvoltage, reverse polarity and short circuit.

The same software as every other MaxxECU

Every MaxxECU runs the same software — the same MTune and MDash — so a tune can be moved from any MaxxECU to any other, GEN1 to GEN2 included, and a tuner who knows one unit is at home on the next. Bear in mind that the connectors and harness are different: a GEN2 is not a drop-in replacement for a GEN1 unit already wired into a car.

MaxxECU GEN2 RACE full specifications

Choosing the right size

Leave yourself some headroom. A MaxxECU is very capable of controlling far more than just the engine, so it is good practice to choose a unit that leaves a few inputs and outputs in reserve. Ideas develop as the project goes on, and very often the wish list grows — spare I/O means there is something left to use when it does. The ECU is not something you swap later like a sensor: the connectors and harnesses differ between models, so pick the right unit from the start.

GEN2 RACE is the top of the range, so there is nothing to step up to. If your engine has 8 cylinders or fewer, 8 injectors are enough and native EGT inputs are not needed, GEN2 TRACK is the same platform in a smaller package.

What to buy alongside a MaxxECU GEN2 RACE

• Pressure sensors — oil pressure and fuel pressure are the two we would fit to every engine. Both can be logged and used for engine protection.
• Temperature sensors — oil temperature, intake air temperature, gearbox or differential temperature, depending on how many inputs you have free.
• EGT sensors — TYPE-K probes and weld-in fittings for the native thermocouple inputs, one per cylinder if you want full coverage.
• Knock sensors — the knock inputs need hardware to listen with.
• Flex fuel sensor — if the car will see E85 or varying ethanol blends.
• Wideband lambda sensor — already included in the kits that come with a harness (single or dual Bosch LSU 5.2). Only a unit-only purchase needs a sensor bought separately.

Frequently asked questions

What is the difference between MaxxECU GEN2 RACE and GEN2 TRACK?

GEN2 RACE adds 8 native TYPE-K EGT inputs, 12 sequential cylinders instead of 8, 16 injector outputs instead of 8, 12 ignition outputs instead of 8, 24 analog inputs instead of 16, 8 pulse inputs instead of 6, and 16 GB of logging instead of 8 GB. It is 700 g and 240 mm long versus 545 g and 206 mm. IP68, WiFi, dual lambda, dual knock, the 550 kPa MAP sensor, dual CAN, the accelerometer and Lua scripting are identical. GEN2 TRACK can still run EGT through 0–5 V amplifiers on its analog inputs.

What is the difference between MaxxECU GEN2 RACE and PRO?

Both do 12 sequential cylinders and 16 injectors. GEN2 RACE is the newer platform: IP68, WiFi, LSU 5.2 support, 550 kPa MAP versus 400 kPa, 16 GB logging versus 8 MB, dual-core CPU at 3000 calculations/second versus 2000, Lua scripting, protected I/O, Superseal connectors and 700 g versus 1137 g. PRO has more raw channels — 12 EGT inputs versus 8, 30 GP outputs, 22 analog inputs, 10 digital inputs.

Can MaxxECU GEN2 RACE run a V12 fully sequentially?

Yes — up to 12 cylinders fully sequentially, with 12 ignition outputs and 16 injector outputs.

How fast does GEN2 RACE sample EGT?

200 Hz on all 8 EGT inputs. GEN1 RACE and PRO sample EGT at 50 Hz.

How many expansion modules can a GEN2 RACE use?

Up to four with MaxxECU's pre-defined configuration, versus one on GEN1 ECUs. Any number can be used on any ECU with user-defined CAN configuration.

Does GEN2 RACE support Bosch LSU 5.2?

Yes, natively on both wideband channels, while remaining compatible with LSU 4.9 and 4.2. LSU 5.2 is the sensor to use for ultra-rich methanol mixtures.

Where can I buy a MaxxECU GEN2 RACE in Estonia, Latvia or Lithuania?

Rocket Speed Shop is the official MaxxECU distributor for the Baltic region, with warranty coverage, firmware access and local technical support.

Explore the rest of the MaxxECU range

MINI · STREET · SPORT · RACE · GEN2 TRACK · PRO · PDM20 · Expansion Module.

Shop MaxxECU GEN2 RACE at Rocket Speed Shop →