The governing body of the FIA World Endurance Championship, the Automible Club L'Ouest (ACO), made their final decision regarding Equivalence of Technology changes for gasoline and diesel-powered LMP1 machinery earlier in the season, and the performance alterations are in place for this weekend's German round of the championship.
Here's what the EoT changes bring to the table for the LMP1 class:
Diesel changes play in favor of Audi's R18
The diesel-powered Audi R18 e-tron Quattro, which competes in the 4MJ subclass, will receive significant perfomance increase with about 0.44 percent in diesel energy (134.8 to 135.4) and 0.63 percent boost in maximum diesel flow (79 to 79.5).
The fuel capacity has been reduced across all three LMP1 factory challengers, with the R18 hit with a reduction from 54.2 to 53.7 liters.
Given the changes made to the gasoline powered cars, the Audi should head into this weekend's Nürburging round with a bit of an advantage.
Porsche with perfomance cuts after strong Le Mans showing
In the wake of Porsche's spectacular 1-2 finish at the 24 Hours of Le Mans back in June, the 8 MJ powered 919 Hybrid will have to deal with a reduction in maximum fuel flow (kg/h) of 88.5 to 87.0 kg/h per lap at Le Mans.
To add further insult to injury, the gasoline energy will be reduced by 2.2 percent (MJ/lap) and the fuel capacity from 68.3 liters to 67.4 liters.
Toyota won't catch a break with EoT changes
The defending WEC champions Toyota are struggling to win this season with their 2015 TS040 Hybrid, and the Japanese car manufacturer will not be helped from their EoT adjustments done to the 6 MJ subclass
The TS040 faces a reduction from 89.5 to 88.5 in maximum fuel flow and because it is gasoline-powered, it receives numbers identical with the ones used for the Porsche 919 Hybrid in fuel capacity and gasoline energy.
These changes won't bother Toyota too much anyway, after deciding to stop their developement of this year's car in favor of switching focus to a brand new turbocharged car for 2016.
These changes will come into effect at this weekend's Six Hours of Nürburgring, the fourth round of the 2015 World Endurance Championship.
Follow @VAVELSportsCar on Twitter for continued coverage during this weekend's Six Hours of Nürburgring.
David van den Boom is a writer for the VAVEL USA Racing section. Follow him on Twitter at @David__VDB.