Description
Fits
Year | Make | Engine |
2020 - 2023 | GMC/Chevrolet | L5P 6.6L Duramax |
The all - new Pulsar V3 for 2020 - 2023 GM 6.6L Duramax is a top - choice in the L5P tuning market. Say goodbye to messy wires, costly ECU swaps, and underperforming products. This is the best performance tuner on the market, offering easy installation, great performance gains, and the unique ability to change power levels while driving using steering wheel controls (Shift - On - The - Fly).
The Pulsar is an in - line computer that directly connects to the vehicle PCM without extra wiring. By connecting to the truck's PCM, it can optimize performance, throttle response, mileage, and more. It offers 5 performance levels that you can switch on - the - fly using the cruise control + and - buttons on the steering wheel. The active power level (0 - 5) will show on the speedometer gauge. Just change the performance levels or hit cancel on the cruise control to see the current power level.
Part Number: 22401
Features
- Boost up to 136 HP & 291 lb - ft torque
- Switch 5 power levels on - the - fly with cruise control buttons
- Connect directly to ECU in the engine compartment for instant power
- Built - in throttle sensitivity control for better throttle response
- Adjust speed limiter from 98 - 140 MPH
- Set TPMS from 40 - 99 psi
- Adjust tire size from 29 - 50.9”
- Set gear ratio from 2.0 - 6.99
- Clear DTC codes
- Use manual regen function
- Relearn transmission
- Adjust RPM during idle with high - idle settings
- Power decreases if transmission slip is detected
- Power decreases if EGTs exceed the set limit
- Recalibrate speedometer for wheel/tire changes
- Easy installation, no complex wiring or ECU flashing needed
- Comes with an update cable
Notes
- The Pulsar V3 cannot be controlled by an Insight CTS2. It requires a CTS3 Monitor for insight control features.
- To unlock more features and control, check out the Insight CTS3. When paired with the Pulsar V3, it's a powerful combination of power and monitoring.

Using the Pulsar V3 Tuning Module is easy. First, install it by directly connecting it to the vehicle PCM in the engine compartment - no need for complex wiring or ECU flashing. Once installed, you can start enjoying its benefits. To change the performance levels, use the cruise control + and - buttons on the steering wheel. The current power level will be displayed on the speedometer gauge. You can also adjust various settings like speed limiter, TPMS, tire size, and more as per your needs. When it comes to maintenance, keep the module clean and make sure the connections are secure. If you encounter any issues and see DTC codes, you can clear them using the module. Remember, the Pulsar V3 cannot be controlled by an Insight CTS2. For insight control features, you need a CTS3 Monitor. Also, if you want to unlock more features and have better control, pair it with the Insight CTS3.