Following Wednesday’s qualifying session where the turbocharged Ford and Ferrari GTE-Pro cars proved significantly faster than the non-turbo powered cars of Aston Martin, Corvette and Porsche the ACO have implemented Balance of Performance changes just over 24 hours before the start of this year’s 24 Hours of Le Mans.

Ford took the GTE Pro pole on Weds with the #68 car with the other three GTs qualifying 2-4-5. The #51 AF Corse Ferrari 488 slotted neatly between the Fords in third.

Today the Fords have received an extra 10kg of ballast, moving the four cars up to 1248kg overall and the removal of boost pressure throughout the majority of the twin-turbo Eco-tech V6’s rev range (the peak 7100 rpm range was left untouched).

Ferrari had the boost pressure of its new twin-turbo V8 488 left as-is however an extra 25 kilos was added to the cars that qualified third, fifth and sixth. All the 488s also received and extra four litres fuel capacity.

The noticeably slow non-turbo challengers from Aston Martin, Corvette, and Porsche also received BoP changes to hopefully address the lack of competitiveness.

Aston’s Vantages have been given a further 0.4 mm opening of its air restrictors which will increase both the power and torque of the 4.5 litre V8. The Corvette C7.Rs received a 0.3 mm air restrictor break and an additional seven liters of fuel capacity. The Porsche 911 RSRs received an additional eight litre fuel capacity.

The ACO has acted quickly to address potential issues and the changes today should make for a thrilling race in the GTE Pro class at this weekend’s 84 visit to La Sarthe.