I was very impressed with the ZR1, I've had to change some things around in order to get this car to properly work on track. I would say it's makes near 750RWHP on 100octane. I actually had a rolling lap of 1:58.62 but someone went off every session and we would get black flagged. On stock tires and brakes, saw 147mph (AIM GPS) on the back straight on lap 2, bravo ZR1! I'm only running -2.3 camber in the front and it was really changing direction. It was cold out and the track was wet all morning so I ran it in Race Mode, which barely interfered. This car does grow on me more and more, I let me buddy drive it and he couldn't even touch his Ferrari afterwards and now says needs a ZR1 lol ...