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Please reach us at info@pnptechworks.com if you cannot find an answer to your question.
An Interchiller is a heat exchanger that uses your vehicle's A/C system to cool the charged air to below the ambient temperature. This cooler air provides a higher cylinder air mass and increases timing for more power. It also reduces the pressure ratio in Positive Displacement (PD) blower applications by increasing its efficiency, resulting in less shaft power going to the blower and more to the wheels. Interchillers are an excellent way to get the most potential out of your supercharged or turbocharged engines. Please see our Knowledge Base for more detailed information.
We are constantly growing and adding new vehicle platforms to our lineup. If you do not see your vehicle listed in our shop, please visit our affiliated partner's page to find a dealer who specializes in your vehicle platform.
This depends on the age and model of the vehicle.
Most late model vehicles’ A/C systems engage the compressor even if the cabin is set to heat, in order to dehumidify the cabin and defrost the windows.
Older vehicles with a manual A/C system may require additional modifications to allow the compressor to work while the cabin is heating.
The instruction manual included with your kit will denote if modifications are required.
The race valve blocks refrigerant flow to the cabin evaporator when voltage is applied to the coil. This prevents the cabin from cooling and dripping condensed water on the race surface. Please see our Knowledge Base for more detailed information.
The total installation time will vary depending on the vehicle. It takes less than 30 minutes to install the Interchiller evaporator assembly and taps. However, we recommend budgeting eight hours for complete installation.
The Base Kit includes the components necessary to make chilled water:
The Base Kit does not include coolant lines and fittings, but add-on kits with coolant lines and buffer tanks are available for specific vehicles.
Check out our shop or contact one of our Affiliated Partners for more information.
Yes! The Universal Kit contains a universal Interchiller evaporator assembly with mounting studs and inline taps with race valve. The inline taps have industry standard IMACA ports to connect your AC lines.
The Remote Mount Kit allows you to install the Interchiller evaporator assembly where space is available on the vehicle if other modifications are in the way.
This Kit includes vehicle-specific taps and a universal mount Interchiller evaporator assembly.
Please note the Remote Mount Kit does NOT contain A/C hoses.
Once installed, please notify us of measured A/C hose length and we will have them made and sent out.
No. The Interchiller will function without any changes to the vehicle's calibration (tune).
However, the engine's cooling fan(s) speed vs A/C pressure should be adjusted for best performance. Increasing the fan(s) speed at lower A/C pressures will increase air flow through the condenser.
Please see our Knowledge Base for more detailed information.
The liquid and suction taps are specifically designed to fit your vehicle at OE connection points without any permanent modifications. The taps allow you to add the Interchiller system to your vehicle's existing A/C system.
The liquid tap mounts on the condenser discharge port and contains the integrated race valve.
The suction tap mounts between the vehicle’s cabin evaporator and compressor.
The integrated race valve requires a 12v source to operate. The valve is Normally Open (NO) so both the cabin and interchiller will receive refrigerant without voltage present. When voltage is applied, the valve closes and blocks refrigerant flow to the cabin.
The valve only draws 1.33A (16w at 12v) so power can be sourced on almost any ignition circuit without the use of a relay. A toggle switch (not supplied) can be installed in the engine bay or vehicle cabin to actuate the race valve. A flyback diode may be required if an ECU controls the race valve. Optional coil voltages and electrical connections are available by special request if required. Please visit our Knowledge Base for more detailed instructions.
No! Our taps seamlessly integrate into your vehicle at OE connection points and are effortless to install.
No special tools are required for installation of the interchiller components. Our Interchiller evaporator assemblies and taps are specifically designed to fit your vehicle at OE connection points using OE sealing methods. They are plug and play with no cutting, splicing, or brazing required.
If your vehicle was originally equipped with a supercharger or turbocharger, we recommend using the factory specified coolant.
If your vehicle has any aftermarket installations, please refer to the manufacturer's documentation.
Do NOT run pure water as it will freeze.
We recommend an Ethylene Glycol Water (EGW) mixture of 50/50 dilution to prevent freezing.
It is recommended to use 3/4" or -12 AN hose to plumb the cooling circuit.
Most Interchiller installations can successfully remove the air-to-water heat exchanger, and most street driving, drag racing, and extended sprints do not require an air-to-water heat exchanger.
Vehicles that are used in road course racing should consider installing an air-to-water heat exchanger in the coolant loop. The extended amount of time under boost and high load may overload the A/C system's capacity.
We also recommend installing an air-to-water heat exchanger for redundancy if the vehicle experiences an A/C system failure or the A/C system is turned off.
Please note that a thermostatic bypass valve is required when an air-to-water heat exchanger is installed with an Interchiller. The valve will bypass the coolant around the air to water heat exchange when the coolant temperature drops below 95ºF (35ºC). This is required when the coolant temperature reaches at or below ambient air temperatures.
Please refer to our Knowledge Base on optimizing your cooling circuit.
Water wetter will aid in the heat transfer of the Interchiller and increase its performance. If adding a water wetter, please follow the manufacture's recommendation for dilution. Too much water wetter will cause the coolant to entrain air and reduce the coolant pump's flow output.
It's true that for some vehicles the A/C compressor is not used under full throttle. It is common practice for OE vehicle manufacturers to disengage the A/C compressor under certain driving conditions. This maximizes power to the wheels and protects the compressor.
The compressor engaging settings should not be changed in the vehicle calibrations: our kit is designed to work with the OE calibrations.
We warranty all our products for one year after the purchase date for workmanship and to be free of all major defects.
Each Interchiller kit is equipped with spare gaskets and/or O-ring's.
Replacement parts are available by special request. Please contact info@pnptechworks.com.
You may need to bleed your coolant system.
Coolant temperature swings are most often caused by trapped air pockets in the coolant system, which inhibit the pump's ability to create flow. Without consistent flow in the system, the coolant temperature will swing.
Follow the factory manual for proper bleeding of the coolant system.
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