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DPis Slowed Again for Long Beach

All four DPi manufacturers slowed for opening sprint of season…

Photo: Rick Dole/IMSA

All four DPi manufacturers have been hit with Balance of Performance changes ahead of next weekend’s IMSA WeatherTech SportsCar Championship round at Long Beach.

There have been boost reductions across the board for the three teams running turbocharged prototypes.

The Acura ARX-05, Mazda RT24-P and Mobil 1 Twelve Hours of Sebring-winning Nissan Onroak DPi have all had their boost levels affected for the first sprint race of the year.

Cadillac’s DPi-V.R, meanwhile, will run with a 0.6 mm smaller air restrictor than it had at Sebring, while the Joest-run Mazda DPis have also been been hit with a 10 kg weight increase.

No aero changes have been made to the Prototype category, which has 14 cars listed for the third round of the season.

All four DPi manufacturers, however, will have reduced fuel capacities, with Acura and Nissan losing 3 liters, Cadillac 2 liters less and the Mazda getting handed a considerable 7-liter decrease.

The changes come amid a dominant run from DPis at Sebring, which saw the global-spec LMP2 cars, which are not subject to BoP adjustments by IMSA, struggle to match the pace in the 12-hour race.

BMWs Slowed After Sebring Breakout

In GT Le Mans, the pair of BMW M8 GTEs have had its turbo boost power levels cut between 5000 and 7500 rpm, in addition to a 4-liter fuel capacity reduction.

The German manufacturer has also been handed a BoP change in GT Daytona, which is set for the next round at Mid-Ohio.

The Turner Motorsport-run BMW M6 GT3 will have a 20 kg weight decrease and 2-liter fuel reduction for the May 4-6 race, which will see all three classes back in action together.

Daniel Lloyd is a UK-based reporter for Sportscar365, covering the FIA World Endurance Championship, Fanatec GT World Challenge Europe powered by AWS and the IMSA WeatherTech SportsCar Championship, among other series.


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