Wiring Specialties LS1 ECU Standalone HT-220201
If you’re planning on putting a General Motors LS into your project car, then Hattech's all-new Nexus Rebel LS Engine Management System and terminated wiring harness is perfect for you! It's an Engine Management System and Terminated Engine Harness package that provides a very cost-effective and simple solution to get your General Motors LS engine up and running. FEATURES
- ECU designed from the ground up to suit GM's popular LS engine platform
- Start-up is a breeze thanks to the new LS Set-up Wizard in our NSP software
- Comes complete with an easy-to-install harness to suit multiple GM LS applications
- Easy integration with Haltech dashes, PDMs, sensor kits, and accessories
- Kit Supports Gen III engines with cable throttle The Rebel LS comes with dedicated inputs and outputs that don’t require configuration and work as intended right out of the box. Every wire in the harness is labeled and configured in the software so there’s no chance of a setup or configuration problem. There’s simply no need to spend hours working on a pin-out or assigning pins and functionality in the software. Just read the labels on the harness and plug them into the associated device. But we know that if you’re putting an LS into your project car there will always be a level of customization, so we’ve included some configurable channels. • 1x 25amp output • 5 x digital outputs • 4 x digital inputs • 2 x analogue inputs These are user-configurable and extra to the inputs and outputs required to run the engine. Kit Includes
- HT-220001
- Rebel ECU
- HT-186500
- Main Harness
- HT-186504
- Cable Throttle + IAC sub-harness
- HT-186501- LS EV1 Injector Sub-Harnes
- HT-187003
- T56 Transmission Harness
- HT-186123
- 2 Pin Bosch Alternator Harness
- HT-186124
- 4 Pin Delco Alternator Harness
- HT-186125
- 2 Pin Yazaki Alternator Harness
- HT-186508
- Gen III Knock Sensor Adaptor Sensor Pack
- Bosch LSU 4.9 Sensor
- Weld on fitting for O2 Sensor
- Air Temperature Sensor M14 x 1.5
- Weld on fitting for Air Temp Sensor On the transmission side of things, the harness includes the electrical connector for the T56 speed sensor, but you could run any manual gearbox or mechanically shifted automatic transmission like a Powerglide or TH400. We will be adding support for popular electronically controlled transmissions in the future, and they will integrate with the current harness system. The Rebel LS has a “CAN” communication network that allows communication with all the popular Haltech CAN devices like the iC-7 Dash, 8 and 15 Button Keypads, and the Power Distribution Modules or PD-16s. In fact, you could connect up to 4 PD-16 units and have the entire car including headlights and taillights controlled through the ECU avoiding the need for external fuses and relays. As for the software, there’s a setup wizard that runs when you first go online with the ECU. It asks for a little information about your particular setup then it builds the Fuel and Ignition maps, as well as makes setup changes depending on the configuration. It’ll ask things like which variant of engine you’re using, what’s the compression ratio, what camshaft you are using, what injectors, and which coils. Asking you to let us know which components are in play, so we can build the closest tune file for your combination. The Rebel LS ECU is equipped with advanced long-term learning which allows it to monitor the Air to Fuel ratio, the ignition table, and knock detection feedback as well as idle quality and continually make adjustments in the background. The longer the engine runs the better the tune-up gets! You can go online with the Nexus NSP software and make tuning changes just like you’re used to with the rest of the Haltech range, but there is certainly no need to – The setup wizard takes care of it all! JUST THE FACTS OUTPUTS Ignition 8 x Pre-Configured Outputs Injector 8 x Pre-Configured Outputs (High Impedance Only) Low Side Switched / Digital Pulsed Outputs (DPO) 5 25A Outputs 3 x Dedicated (Ignition / Injection, Fuel Pump and Cooling Fan) 1 x User Definable INPUTS User Definable Analog Voltage Inputs (AVI) 2 Engine Position Inputs 2 x Dedicated Crank And Cam inputs User Definable Synchronised Pulsed Inputs (SPI) 4 (Can Be Programmed For AVIs) Pre Configured Knock Inputs 2 On-board Wideband Controller (LSU 4.9 Only) 1 (Expandable To 10 With Haltech CAN WB Modules) Ignition Switch Input 1 COMMUNICATIONS CAN Bus Networks 1 x Dedicated Haltech CAN High-Speed USB 2.0 (USB-C interface) 1 On-board Wi-Fi YES OTHER On-board Data Logging 32MB On-board MAP Sensor 4Bar (Absolute) / 43.5 PSI Gauge Oscilloscope 4 Channel 5V Sensor Supply 1 8V Sensor Supply 1 Sensor Ground 1 FEATURES Easy Set Up Wizard YES Drive-By-Wire Throttle Support 1 Flex Fuel YES Closed Loop O2 Control Dual Bank (Requires Additional Sensor / Controller) Knock Control Dual Vari
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Wiring Specialties LS1 ECU Standalone HT-220201
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Are OEM products more expensive than aftermarket alternatives?
OEM products might have a higher upfront cost compared to aftermarket parts, but their superior quality and durability often make them a more cost-effective choice over time. Investing in OEM ensures you’re getting parts specifically designed for your vehicle, which can lead to better performance and longevity.
Can I purchase OEM parts online or do I need to visit a dealership?
You don’t need to visit a dealership to get OEM parts. You can conveniently purchase genuine OEM components from authorized distributors and reputable online retailers like Turbo Tech Performance. Our online store provides a wide selection of high-quality parts delivered straight to your door.
Are parts from brands like Mopar, ACDelco, and Motorcraft interchangeable between different vehicle brands?
No, parts from Mopar, ACDelco, and Motorcraft are typically designed for specific vehicle brands. It’s crucial to ensure compatibility with your vehicle’s make and model by checking part numbers and consulting with a knowledgeable expert.
Can I install OEM parts myself, or is it better to have a professional handle it?
While some OEM parts can be installed by DIY enthusiasts, the complexity of installation can vary. For the best results and to ensure proper fitment and performance, we recommend having a trained mechanic install the parts, especially if you’re unfamiliar with automotive repairs.
Do OEM parts come with a warranty?
Yes, many OEM auto parts come with a manufacturer’s warranty that covers defects or issues. Be sure to check the warranty details for each part at the time of purchase, and keep your receipt for any potential warranty claims.


