[Adam43]

How have the IMSA lots changed their BoP since the beginning of this GTP era?

The performance bits:

Weight (Kg)

-- Bulletin --	--- Track ---	Acura	BMW	Cadillac	Porsche
12/1/2023	ROAR	1030	1030	1030	1030
17/1/2023	Daytona 24	1030	1030	1030	1030
8/2/2023	Sebrign Test	1030	1030	1030	1030
13/3/2023	Sebring Race	1054	1040	1038	1048
31/3/2023	Long Beach	1045	1036	1031	1036
4/5/2023	Laguna Seca	1049	1031	1030	1038
4/6/2023	Watkins Glen	1053	1038	1037	1043
29/6/2023	Mosport Park	1046	1031	1030	1037
21/7/2023	Indy Test	1046	1031	1030	1037
27/7/2023	Road America	1044	1030	1030	1036
7/9/2023	Indy	1047	1031	1030	1037
7/9/2023	Road Atlanta	1046	1031	1030	1037
10/1/2024	ROAR	1072	1031	1030	1051
		ARX-06	M Hybrid V8	V-LMDh	963

Max Power (kW)

-- Bulletin --	--- Track ---	Acura	BMW	Cadillac	Porsche
12/1/2023	ROAR	500	500	500	500
17/1/2023	Daytona 24	500	500	500	500
8/2/2023	Sebrign Test	520	520	520	520
13/3/2023	Sebring Race	520	513	513	517
31/3/2023	Long Beach	520	515	513	515
4/5/2023	Laguna Seca	520	512	511	514
4/6/2023	Watkins Glen	520	513	513	515
29/6/2023	Mosport Park	520	513	513	515
21/7/2023	Indy Test	520	513	513	515
27/7/2023	Road America	520	513	513	515
7/9/2023	Indy	520	512	512	514
7/9/2023	Road Atlanta	520	513	513	515
10/1/2024	ROAR	520	514	510	519
		ARX-06	M Hybrid V8	V-LMDh	963

There is suddenly a bigger spread with the power:weight. Although if you comapre to WEC there is still a much narrower spread.

This is more set my the manufacturer really, but for completeness (and boringness):

Nmax (rpm)

-- Bulletin --	--- Track ---	Acura	BMW	Cadillac	Porsche
12/1/2023	ROAR	9512	8000	8800	8158
17/1/2023	Daytona 24	9512	8000	8800	8158
8/2/2023	Sebrign Test	9512	8000	8800	8158
13/3/2023	Sebring Race	9512	8000	8800	8158
31/3/2023	Long Beach	9512	8000	8800	8158
4/5/2023	Laguna Seca	9512	8000	8800	8158
4/6/2023	Watkins Glen	9512	8000	8800	8158
29/6/2023	Mosport Park	9512	8000	8800	8158
21/7/2023	Indy Test	9512	8000	8800	8158
27/7/2023	Road America	9512	8000	8800	8158
7/9/2023	Indy	9512	8000	8800	8158
7/9/2023	Road Atlanta	9512	8000	8800	8158
10/1/2024	ROAR	9512	8000	8800	8158
		ARX-06	M Hybrid V8	V-LMDh	963

And now the energy bit:

Energy Allocation (MJ)

-- Bulletin --	--- Track ---	Acura	BMW	Cadillac	Porsche
12/1/2023	ROAR	920	920	920	920
17/1/2023	Daytona 24	920	920	920	920
8/2/2023	Sebrign Test	930	930	930	930
13/3/2023	Sebring Race	917	905	905	912
31/3/2023	Long Beach	914	907	903	907
4/5/2023	Laguna Seca	915	902	902	907
4/6/2023	Watkins Glen	917	905	905	909
29/6/2023	Mosport Park	914	902	903	907
21/7/2023	Indy Test	914	902	903	907
27/7/2023	Road America	915	904	904	908
7/9/2023	Indy	917	902	902	907
7/9/2023	Road Atlanta	915	903	903	907
10/1/2024	ROAR	920	908	902	917
		ARX-06	M Hybrid V8	V-LMDh	963

Stint Energy Replenishment Rate (MJ/s)

-- Bulletin --	--- Track ---	Acura	BMW	Cadillac	Porsche
12/1/2023	ROAR	23	23	23	23
17/1/2023	Daytona 24	23	23	23	23
8/2/2023	Sebrign Test	23.25	23.25	23.25	23.25
13/3/2023	Sebring Race	22.925	22.625	22.625	22.8
31/3/2023	Long Beach	22.85	22.675	22.575	22.675
4/5/2023	Laguna Seca	22.875	22.55	22.55	22675
4/6/2023	Watkins Glen	22925	22.625	22.625	22.725
29/6/2023	Mosport Park	22.85	22.55	22.575	22.675
21/7/2023	Indy Test	22.85	22.55	22.575	22.675
27/7/2023	Road America	22.875	22.6	22.6	22.7
7/9/2023	Indy	22.925	22.55	22.55	22.675
7/9/2023	Road Atlanta	22.875	22.575	22.575	22.675
10/1/2024	ROAR	23	22.7	22.55	22.925
		ARX-06	M Hybrid V8	V-LMDh	963