John,
I started out doing 1:36s, and my best time was actually a 1:32.1, which I ran several times. I never managed a 1:31.x. According to Ivor (the owner of the
European Motorsports Park) the car that was running mid-20s was a Formula Mazda (I'm not sure which generation). It was my first time pushing the ACR (or any Viper) near the limit, and my first time on that track. I'm sure much faster laps could be had. My ACR is stock, except for the adjustable bits (alignment, ride height, dampers).
I'm really not sure what a good lap time is for a street car there. We were running the full track, clockwise with the "bus stop chicane".
When his car was not setup properly at all (higher than stock ride height, dampers set to street settings, and no splitter extension) David Mazick was running 1:35-6s (I know because I paced him for two laps). Unfortunately I never got any PBox data or lap times from him after he set the car up properly, but I'm sure he was much faster.
F8L SNK, there was a lot of video taken, but it may be a while before its edited and put up anywhere.
It was a great event. I don't know that I'd want to do anything really competitive at that track, but for a simple lapping day it was fine.
To be honest, I was not impressed with my ACR's overall grip level at that event. Everything else about it was great, but it didn't have the grip I'd expected. It could have been the surface, which is new asphalt. It was very smooth, and caused nearly no tire wear on my car. Well, the mild brake pad fade I got during my last session wasn't much fun either (I suppose I need some ducting).