It is a 224x with the Eddy Current unit. Load was set at fixed 10% only, just to help simulate the truck weight a little. I have run my truck with and with out the load and used the foot brake a bit to load it and come up with pretty consistent numbers. I have also dyno'd my racecar on our dyno and a 248 with about a 5-10Hp difference (400whp ish)