A repository of the iRacing NASCAR setups available on the web site OpenSourceSetups.x10.mx and it's mirror OpenSetups.win previously known as OpenSetups.ml
If anyone wants to contribute I'm going to figure out someway that setups can be provided from the community. For right now either make a pull request or message me here. To be totally honest I know there is a lot more speed to be found in my setups. I almost never run telemetry and just dial the car in by the seat of my pants. I am 100% positive if someone wanted to take the time to analyze the data and see exactly what the car is doing there is a ton more speed to be unlocked. If not that's cool as well.
At somepoint in the hopefully not too distant future I'm going to publish a wiki either here or on the website with links, vids, and a brief tutorial on how to use telemetry sessions, how to analyze a session in MOTEC, and some things to look for. If I had the time to devote I'd do it each week, unfortunately many weeks I don't manage to get a setup published till Sat night. If I took any more time then I could probably have a setup ready by the Wednesday of the following week. Maybe.