Optional Active TX Block Valve On Vehicle Calibration
The Active TXB Valve is bench-adjusted for chiller use and is ready to operate. If you wish to run a performance test to further calibrate it for your vehicle, this should only be performed by an experienced individual. First, mark the valve body to the adjuster with a Sharpie for reference.
The ambient temperature must be 75°F or above, with around 90°F being ideal. Conduct the performance test in Competition Mode while monitoring the water temperature, then turn the 10mm TXV adjuster no more than ⅛ turn at a time. Turning clockwise will lower the suction pressure, while counterclockwise will raise it. Never exceed a total of 3/8 turn in or out.
Most kits with Active TX Block Valve upgrade include a suction tap in line at the TX valve. The sweet spot for suction pressure at the valve in Competition Mode is between 10-20 psi at 1000-1200 rpm.
For fine-tuning the active TXB valve for optimal system performance, here's a quick recap of the key steps and tips:
1- Ambient temperature: Ensure the environment is around 75°F, ideally closer to 90°F. This is crucial for accurate testing.
2- Initial setup: Mark the valve body to the adjuster for reference with a Sharpie before making any adjustments. This will help you track your changes.
3- Competition Mode: Run the performance test in this mode and monitor the water temperature closely.
4- Adjusting the TXV: Turn the 10mm adjuster slowly – no more than ⅛ turn at a time. Clockwise lowers the suction pressure, while counterclockwise raises it. Be careful not to exceed a total of 3/8 turn.
5- Optimal suction pressure: The sweet spot for suction pressure is between 10-20 psi in Competition Mode.
6- For a thorough adjustment: Consider ordering your chiller kit with a suction tap in line at the TX valve for the most precise results.
Stay patient and make small adjustments when turning the adjuster. Subtle changes can make a significant difference, and using the Sharpie mark as a reference is a smart strategy.
