The Cadillac DPi-V.R race car, which is set to compete in this year’s IMSA WeatherTech SportsCar Championship with a smaller V8 engine under the clamshell, has been hit with Balance of Performance (BoP) adjustments following the recent Roar Before the 24 preseason test weekend. Cadillac’s racing prototypes dominated every test session, prompting IMSA to try and level the playing field.
The Cadillac DPi-V.R has been hit with a smaller intake restrictor – 31.6 mm in diameter, down 0.6 mm from the start of testing – to reduce its peak power output. Meanwhile, the prototype has been granted a 1-liter increase in fuel capacity, giving it a total capacity of 68 liters, and a bit of extra flow rate during refueling with a 0.5-mm bigger flow opening.
Acura’s new ARX-05 prototype, which is what elder Taylor brother Ricky will be driving this season, wasn’t hit with any power restrictions, and was granted 4 liters of extra fuel capacity (for a total of 80 liters) and a 1.5-mm bigger flow opening for refueling. The Acura, along with most of the rest of the DPi field, were hit with aerodynamic BoP adjustments, where Cadillac’s DPi-V.R was not.
In the GTLM class, the Chevrolet Corvette C7.R race cars have been given an extra liter of fuel capacity for 91 liters total, but was hit with a small aero adjustment to reduce top speed.