Supercars has stepped up engine testing with Dick Johnson Racing running multiple engine specifications at Queensland Raceway.

Following on from the findings at the Gen3 wind tunnel testing in America, attention has shifted to the topic of engine parity.

As was the case earlier this month, when DJR and Chevrolet team PremiAir Racing each provided a car, the category is testing how to use the torque sensors which have now arrived.

However, it has also been announced via Supercars’ official website that DJR is set to run two different engine specs.

“Effectively this is an extension of the previous two days of torque testing,” General Manager of Motorsport Tim Edwards told
“We were at Southport (Airfield) in December then we did some competitive work between the two makes at Queensland Raceway with torque sensors.

“In effect, DJR has two different specifications of engine, and on the same car with the same torque sensor on the same day, they’re going to get some comparative running.”

Previously both a DJR Mustang and a Matt Stone Racing Camaro tested with torque sensors at Queensland Raceway a fortnight ago, plus a separate run at Southport Airport last year.
Edwards said today’s running is focused on further refinement of the Ford engine specifications that will be used for the 2024 season.

“We did installation running at Southport before Christmas to see that they worked and we got some information out of it,” he said.

“The testing we did a couple of weeks ago with the DJR car and PremiAir car was further validation.
“That was different circumstances obviously with acceleration out of corners as opposed to going up and down a straight.

“Out of that, DJR refined a couple of things, and the best way to validate the differences between the specs was to do an engine change in the middle of the day to validate the differences, allowing them to refine what will be the spec engine for Ford teams in 2024.”

The Coyote-based Ford unit underwent a number of mapping changes last year, although the throttle body was also changed mid-season.

In addition to torque sensors, transient dynamometer testing will also form part of the engine parity initiatives.