Haltech Nexus S3 ECU + Universal Wire-in Harness - 2.5m (8')

Suits: Engines with up to 8 cylinders or up to 4 rotors. Racing applications where advanced race features and data logging is required.

Includes: Nexus S3 ECU, 4 x mounting bolts, USB-C Cable, USB-C dust cap, Quick Start Guide, Wiring Diagram + Universal Wire-in Harness - 2.5m (8').

ECU OVERVIEW
Haltech's Nexus S3 is the successor to the acclaimed Elite 2500, offering a serious upgrade in performance and functionality. The S3 combines all the classic functionality of the Elite 2500 with new features and the superior processing power of the successful Nexus platform.
8 x peak/hold injector drivers (can be used as low side drive outputs)
8 x low current ignition outputs (can be used as low side drive outputs)
6 x low side drive outputs, PWM capable (DPOs)
4 x push-pull / h-bridge outputs (8A, PWM capable), eg for electronic throttle
11 x 0-5V analog inputs with redundancy for electronic throttle and switchable 5V pullup
Trigger and home inputs with differential inputs, adjustable thresholds and glitch filters
6 x synchronous pulsed inputs, zero crossing or adjustable thresholds - cam sensor inputs, frequency inputs or 0-5V analog inputs
1 x on-board wideband controller, supporting NTK and LSU4.9
1 x on-board 4 bar MAP sensor
2 x CAN ports with switchable termination

ECU FEATURES
Controlled via NSP (Nexus Software Programmer)
Long Term Learning
Stepper Motor Control
4D Closed Loop Boost Control
Closed Loop CO2 Control
Rotational Idle
Launch Control
Traction Control
Anti-Lag
Dual Knock Control
Trans Brake Control
Race Timer
Multi Stage Fuel Injection
Multi-level Engine Protection
6 Stage Nitrous Control
4-sensor variable cam control
Intake Air Bleed Control
Flat Shift Control
Shock Travel & Ride Height Control
Advanced Torque Management
On-board Wi-Fi
On-board datalogging (128MB)
AUTOMATIC TRANSMISSION CONTROL
Ford AODE/4R70W
GM 4L60E
GM 4L80E
Toyota A340E
Lenco
Liberty

More about the new S-Series ECU Range

Haltech’s new Nexus S2 and S3 ECUS are successors to the acclaimed Elite 1500 and 2500, respectively. Offering a serious upgrade in performance and functionality, the S-Series combines all the classic functionality of the Elite two-connector range, with new features and the superior processing power of the successful Nexus platform.

KEY FEATURES

PRODUCT SUITS

Outputs

NEXUS S2	NEXUS S3
4 x Ignition	8 x Ignition
4 x Injection (peak and hold)	8 x Injection (peak and hold)
6 x Digital Pulsed Outputs (DPO)	6 x Digital Pulsed Outputs (DPO)
4 x Half Bridge Outputs (HBO) (max 2 x H-Bridges/DBW throttles) (8A max when used as “High Side outputs”)	4 x Half Bridge Outputs (HBO) (max 2 x H-Bridges/DBW throttles) (8A max when used as “High Side outputs”)
ECR output (grounds the negative side of a relay)	ECR output (grounds the negative side of a relay)

 

Inputs

OTHER

NEXUS S2	NEXUS S3
1 x 5V Sensor supply	1 x 5V Sensor supply
1 x 8V Sensor supply	1 x 8V Sensor supply
1 x Sensor ground	1 x Sensor ground
2 x Switched power input pins	2 x Switched power input pins
2 x Battery ground pins	2 x Battery ground pins
Onboard Wi-Fi	Onboard Wi-Fi

 

FEATURES

• • Controlled via NSP (Nexus Software Programmer)

• • Dual Drive by Wire Throttle Control (DBW)

• • High or Low Injector Impedance Control, with programmable peak current and hold current

• • Flexible tuning setup for Petrol (Gasoline), LPG, Methanol and Ethanol allows you to simply select your fuel type

• • Flex Fuel Function – Tune your engine’s boost, fuel and ignition by ethanol content

• • Long-term learning (Auto-tune) on fuel, ignition, cam, boost & idle control maps (up to 4D)

• • Dual CAN Bus communication for Haltech Dashes and expansion devices.

• • Closed Loop Idle Speed Control with learning for consistent idle stability Requires 1 or 2 user-defined outputs (BAC type) or 4 user-defined outputs (Stepper motor type)

• • 4D Closed Loop Boost Control

• • Traction Control – Control your engine’s power output via mappable front vs rear axle or individual wheel speed slip

• • Dual Knock Control – Synchronized to engine position with high-speed digital filtering for accurate detection.

• • Closed Loop O2 Control – Dual bank control capable with optional external CAN O2 Wideband Controller Kit

• • Variable cam control – Independently control up to 4 camshafts – Requires a minimum of 1 user-defined input & output per variable cam

• • Load sensing by Throttle Position (TPS), Manifold Absolute Pressure (MAP), Mass Air Flow (MAF) or Engine Pressure Ratio (EPR)

• • Stepper Motor Control

• • Intake Air Bleed Control

• • Shock Travel & Ride Height Control

• • Sequential turbo control

• • Onboard Wi-Fi – Enables remote monitoring and tuning through NSP and Haltech Connect

• • On-board data logging – Up to 100 channels at 1kHz (1ms) sampling rate or up to 300 channels at a lower sampling rate, loop logging. with 128MB of internal memory.

• • Laptop data logging -Data log all available channels directly to your laptop’s hard drive for both tuning and diagnostics

• • 4 channel Oscilloscope

• • IP64 Rating

 

ADVANCED TUNING

• • Tuning Table Resolution up to 32 x 32 x 8 (4D)

• • Limitless tuning flexibility -Tune your engine by a combination of 4D tuning tables combined with 3D per cylinder compensations and multiple user-definable corrections. Eg: Tune by a combination of manifold pressure, throttle position, cam position, ethanol content, gear, road speed, race time, EGT, shock travel, ride height or any channel for ultimate flexibility – Dual mapping is a thing of the past.

• • Per Cylinder Tuning Correction – 3D

• • Wideband O2 – Connect up to 10 Channels via CAN expansion devices

• • Thermocouples/EGT (Exhaust Gas Temperature) – Connect up to 12 Channels via external CAN expansion devices

• • Engine Protection – Set advanced multi-level limits for sensors and protect your engine against common causes of failure.

 

AUTOMATIC TRANSMISSION CONTROL

• • Ford AODE/4R70W

• • GM 4L60E/4l80E

• • Toyota A340E

• • Lenco

• • Liberty – Multiple Outputs Active

• • Jatco (Nissan) 4AX series

• • Jatco (Nissan) 4R series

• • ZF 6HP26 (Available for Ford Falcon 6 Cylinder Only)

 

RACE FUNCTIONS

• • Launch Control – Control your engine’s power delivery, RPM & boost for consistent performance at the start line

• • Nitrous Control – Advanced programming of up to 6 stages of wet or dry nitrous kits with on/off delays & banked control options

• • Boost Control – Intelligent 4D Closed loop, with learning, flexible user-definable axis and 14 fully user-definable boost target and duty cycle corrections

• • Multiple Boost Control Modes – EG: boost by gear, road speed, race timer, shock travel, ride height etc

• • Closed Loop CO2 Boost Control – Wastegate pressure and position, intake air bleed control (charge pipe wastegate) functionality for the hard-core racer

• • Anti-Lag/Rotational idle – for closed course racing, rally, circuit or drift. Build and maintain boost during closed throttle conditions

• • Rolling Anti-Lag – lock to your current (or pre-set) RPM or road speed for roll racing or pit lane limiting

• • Flat Shift – Optimize your shifting precision via a combination of inputs such as a clutch switch or strain gauge.

• • Shock Travel/Ride Height inputs – Allow dynamic tuning and data logging to assist in chassis development and power delivery

• • Timer Functions – Use the combination of the race timer and 10 additional programmable timers for time-based control of multiple engine parameters, power delivery and other user-definable functions

• • Transbrake Function – Allows smooth and consistent control of start line staging (Bump or Creep)

 

WHAT’S IN THE BOX?

NEXUS S2	NEXUS S3
1 x HT-212000 Nexus S2 ECU	1 x HT-213000 Nexus S3 ECU
1 x USB-C Cable	1 x USB-C Cable
1 x USB-C Dust Cap	1 x USB-C Dust Cap
1 x Haltech Fabric Keytag	1 x Haltech Fabric Keytag
1 x Quick Start Guide Booklet	1 x Quick Start Guide Booklet
1 x Wiring Diagram	1 x Wiring Diagram
Haltech Stickers	Haltech Stickers

 

PLUG N PLAY READY

The S-Series can be purchased in Plug’n’play kits, with an adapter harness for the following vehicles:

HONDA

Model	Nexus S2 Kit	Nexus S3 Kit
Acura RSX/Honda Integra DC5 (02-04)	HT-212302	HT-213302
Acura RSX/Honda Integra DC5 (05-06)	HT-212301	HT-213301
Accord OBD-1 (90-95)	HT-212300	HT-213300
S2000	HT-212314	HT-213314
Civic OBD-I (92-95)	HT-212300	HT-213300
Integra OBD-I (92-95)	HT-212300	HT-213300
Prelude OBD-I (92-95)	HT-212300	HT-213300
Civic EP3	HT-212302	HT-213302

MAZDA

Model	Nexus S2 Kit	Nexus S3 Kit
NA MX-5 (Miata)	HT-212316	HT-213316
NB MX-5 (Miata)	HT-212303	HT-213303
NB MX-5 Turbo / Mazdaspeed Miata	HT-212303	HT-213303
RX-7 FD Series 6	HT-212307	HT-213307
RX-7 FD Series 7 & 8	HT-212306	HT-213306

MITSUBISHI

Model	Nexus S2 Kit	Nexus S3 Kit
Eclipse 2G Turbo	HT-212308	HT-213308
Evo 4, 5, 6, 7, 8	HT-212308	HT-213308
Evo 8MR	N/A	HT-213318
Evo 9	N/A	HT-213318

NISSAN

Model	Nexus S2 Kit	Nexus S3 Kit
300ZX (Z32 Fairlady)	N/A	HT-213319
Micra K11	HT-212317	HT-213317
Patrol Y60 (TB42)	N/A	HT-213321
Patrol Y60 (TB45)	N/A	HT-213322
Patrol Y61	N/A	HT-213322
Pulsar N14 GTiR	HT-212317	HT-213317
Pulsar N15	HT-212317	HT-213317
R32 GT-R	N/A	HT-213320
R32 GTS-T	N/A	HT-213320
R33 GT-R	N/A	HT-213320
R33 GTS-T	N/A	HT-213320
R34 GT-R	N/A	HT-213320
R34 GT-T	N/A	HT-213309
S13	HT-212315	HT-213315
S14 Series 1 (Zenki)	HT-212304	HT-213304
S14 Series 2 (Kouki)	HT-212317	HT-213317
S15	HT-212317	HT-213317
Stagea WC34	N/A	HT-213309

SUBARU

Model	Nexus S2 Kit	Nexus S3 Kit
Forrester (99-00)	HT-212305	HT-213305
WRX (99-00)	HT-212305	HT-213305
WRX/STi (01-05)	N/A	HT-213310
STi (06-07)	N/A	HT-213311
WRX (06-10)	N/A	HT-213311
WRX STi (11-99)	N/A	HT-213312

TOYOTA

Model	Nexus S2 Kit	Nexus S3 Kit
Supra JZA80	N/A	HT-213324
Landcruiser 80 Series	N/A	HT-213323

 

S-SERIES FAQS

 

What is the difference between the Elite and the S-Series?

With the S2 and S3, we’ve taken the best features of the Elite 1500 and Elite 2500, and combined them with more modern Nexus hardware.
The S-Series gives you these advantages over the Elite range:

• • Supports Dual Drive-by-Wire Throttles

• • Single Channel Onboard Wideband: Expandible to 10 channels via external CAN devices

• • Onboard Wi-Fi using internal antenna: Enables remote monitoring and tuning through NSP and Haltech Connect App

• • USB 2.0 Comms via USB-C: Cable comms speeds up to 40x faster than Elite. Power-up over USB means you can set up your ECU before installing it in your vehicle.

• • Torque Management: Advanced drag racing function enabling pre-defined wheel slip, previously only available on NEXUS R series and Elite 2500T.

• • 128MB Onboard Data-logging.

• • Flexible IO – Unused outputs can be reassigned 

 

What is the difference between the R-Series and the S-Series?

The R-Series includes on-board Power Distribution functionality, whereas the S-Series doesn’t.

Will you stop producing the Elite Series?

No, the Elite Series will continue production for the foreseeable future.

Will there be a Nexus version of the Elite 750 and Elite 550?

No, we are not currently developing a Nexus successor for the Elite 750 or 550.

 

ACCESSORIES

HT-039067 – Nexus S2/S3/R3 Tube Mount Kit – 41.275mm (1.625″)

HT-039065 – Nexus S2/S3/R3 Tube Mount Kit – 31.75mm (1.25″)

HT-010746 – LSU4.9 Wideband Hardware Pack

HT-010747 – NTK Wideband Hardware Pack

HT-010723 – Wideband Adaptor Harness – 400mm