1. Introduction
The Hypertech PowerStay Model 8000 is a plug-in module designed to disable the Auto Start-Stop feature and/or cylinder deactivation (V4 mode) in compatible GM and Ford vehicles. This device provides a permanent solution to these factory-installed features, allowing for a consistent driving experience.

Figure 1.1: The Hypertech PowerStay Model 8000 device.
2. Safety Information
- Always ensure the vehicle is completely off before plugging in or unplugging the PowerStay module.
- The PowerStay module is designed for specific vehicle applications. Verify compatibility with your vehicle's make, model, and year before installation.
- Be aware that GM OnStar systems may not be able to run full diagnostics when the PowerStay or similar devices are connected to the OBD-II port.
- The PowerStay consumes approximately 20 milliamps (mA) of current when the vehicle is running. When the vehicle is shut off, it enters sleep mode and draws approximately 2 milliamps (mA). This minimal draw is designed to prevent battery drain during normal use.
3. Package Contents
Please verify that all items are present in your package:
- Hypertech PowerStay Module
- USB Cable (for potential firmware updates, if applicable)
- Quick Install Guide
4. Setup and Installation
Follow these steps to install your Hypertech PowerStay module:
- Ensure your vehicle's ignition is completely off and the engine is not running.
- Locate the OBD-II diagnostic port in your vehicle. This port is typically found under the dashboard on the driver's side.
- Carefully plug the Hypertech PowerStay module into the OBD-II port. Ensure it is securely seated.
- Once plugged in, the module will begin to function automatically. No further configuration is typically required for its primary purpose.

Figure 4.1: The PowerStay module plugged into a vehicle's OBD-II diagnostic port.
5. Operating Instructions
The Hypertech PowerStay is designed for simple, automatic operation. Once installed, it will instantly and safely disable your vehicle's Auto Start-Stop system and/or V4 mode (cylinder deactivation).
- Auto Start-Stop: With the PowerStay installed, your vehicle's engine will no longer automatically shut off when the vehicle comes to a stop and restart when the brake pedal is released.
- V4 Mode (Cylinder Deactivation): For vehicles equipped with cylinder deactivation, the PowerStay will keep the engine operating on all cylinders, preventing it from switching to a lower cylinder mode (e.g., V4 mode from V8 mode).
To re-enable these features, simply unplug the PowerStay module from the OBD-II port.
6. Maintenance
The Hypertech PowerStay module requires no user maintenance. It contains no user-serviceable parts. Keep the device clean and free from excessive dust or moisture. If cleaning is necessary, use a soft, dry cloth.
7. Troubleshooting
If you experience issues with your Hypertech PowerStay, consider the following:
- Device Not Functioning: Ensure the module is fully and securely plugged into the OBD-II port.
- Vehicle Compatibility: Double-check that your vehicle's make, model, and year are compatible with the Hypertech PowerStay Model 8000. Refer to the product packaging or Hypertech's official website for a complete compatibility list.
- Persistent Issues: If problems persist after checking the above, contact Hypertech customer support for assistance.
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | 8000 |
| Item Weight | 6.3 ounces |
| Package Dimensions | 7.09 x 5.63 x 2.72 inches |
| Country of Origin | USA |
| Voltage | 12 Volts (DC) |
| Operating Current Draw | Approx. 20 mA (when vehicle is running) |
| Sleep Mode Current Draw | Approx. 2 mA (when vehicle is off) |
9. Warranty Information
For detailed warranty information regarding your Hypertech PowerStay module, please refer to the official Hypertech website or the warranty card included with your product. Warranty terms and conditions may vary.
10. Customer Support
If you require technical assistance, have questions about installation, or need to report an issue, please visit the official Hypertech website for their support contact information. You may find FAQs, troubleshooting guides, and contact details for their customer service team.