I am considering getting this Tstat along with a Mishimoto radiator to help keep my oil temps in check during road race events. I only do events 2-3 times per year and I'm still on the stock tune with no mods.
Is a tune a must if I do road race events but it is also my DD? Or should i just get the radiator and avoid the Tstat until i get it tuned (after my warranty is up)?
You can add this to your car without a tune. Turning the fans on sooner is plus but I know many cars on stock files running this thermostat without any issues.
The radiator swap is a touchy subject. I know plenty of guys rocking a stock one who road course and it flows fine. Adding a better one like the Ford Racing, Afco, BeCool, ect will only increase the volume and allow longer flowing so it has time to cool down more. Same concept with heat exchangers. The Thermostat is a cheap mod that will drop a good 15* off your ECT's.