KJ Jones
February 1, 2013
Photos By: KJ Jones
While horsepower and torque increased when CO2 was sprayed on the intercooler, the stat to note in this dyno graph is the Inlet Air Temperature. The IAT data in our study is the actual value measured and recorded by the sensor and ECU in Oscar Zavala’s Mustang GT. With a short shot of DEI’s cold CO2, IAT dropped roughly 13 degrees. After making real-world tests with the CryO2 setup, we thought it would be cool to make a glory dyno pull to see the performance change after the engine and blower had a significant amount of time to cool, and carbon dioxide is shot at the intercooler. The glory run is ranked against our best result with CO2. While IAT was lowered only an additional 4 degrees, boost, power, and torque jumped dramatically in the glory hit with CO2.

On The Dyno

After installing the system on Oscar Zavala's Vortech-blown, '01 GT (which takes about two-and-a-half hours with no need for exotic changes to the 'Stang or CryO2 components), we learned through dyno and heat tests that spraying liquid CO2 on an air-to-air intercooler definitely enhances the 'cooler's efficiency and promotes power, torque and boost gain.

However, despite enabling the intercooler to transfer heat better, we also noticed that the spray-cooling process is somewhat short lived, especially when it's used manually. Using a throttle-position-style activator is probably the most optimal method of triggering the CryO2 system for use on the dyno, or high-end freeway blasts and such.

When firing the unit with a button, the drag-race environment is perfect for cryo-cooling an air-to-air intercooler. A couple of shots right before staging a supercharged Pony is a sure way to leave the line with big steam.

Baseline CryO2 Difference
RPM Power Torque IAT Power Torque IAT Power Torque IAT
3,500 186.80 280.31 56.00 189.42 284.23 47.00 2.62 3.92 -9.00
4,000 247.76 325.30 56.00 252.09 331.00 47.00 4.33 5.70 -9.00
4,500 300.83 351.10 57.00 305.84 356.95 47.00 5.01 5.85 -10.00
5,000 357.22 375.23 57.00 362.94 381.24 46.00 5.72 6.01 -11.00
5,500 397.48 379.56 58.01 401.02 382.95 46.00 3.54 3.39 -12.01
6,000 421.82 369.24 59.00 419.89 367.55 46.00 -1.93 -1.69 -13.00
6,500 428.79 346.48 60.65 431.77 348.88 47.00 2.98 2.40 -13.65
6,600 426.19 339.16 60.99 430.90 342.91 47.00 4.71 3.75 -13.99

CryO2 CryO2-2 Difference
RPM Power Torque IAT Power Torque IAT Power Torque IAT
3,500 189.42 284.23 47.00 201.78 302.77 43.00 12.36 18.54 -4.00
4,000 252.09 331.00 47.00 266.95 350.51 43.00 14.86 19.51 -4.00
4,500 305.84 356.95 47.00 321.09 374.75 43.00 15.25 17.80 -4.00
5,000 362.94 381.24 46.00 380.72 399.91 43.00 17.78 18.67 -3.00
5,500 401.02 382.95 46.00 415.84 397.09 44.00 14.82 14.14 -2.00
6,000 419.89 367.55 46.00 438.87 384.17 44.00 18.98 16.62 -2.00
6,500 431.77 348.88 47.00 445.30 359.82 45.00 13.53 10.94 -2.00
6,600 430.90 342.91 47.00 450.27 358.32 44.99 19.37 15.41 -2.01