Okay, technically, it's not a NASA Test & Tune, but rather an Open Track Day put on by TWS.

1:00pm to 5:00pm Friday, 09/20/2013
Register at ClubRegistration.net https://clubregistration.net

You know you want to shake down your ride before your race, or Time Trial, or even HPDE, if you are not planning the night enduro.

Right now, there are only five registered drivers. Don't wait until they cancel it due to lack of participants.