Use sous vide device to set water bath to 132 degrees. Combine all the spices and pat into the tri tip. Place tri tip in a zip lock bag and add about 1 tbsp olive oil. Use the water-displacement method to seal the bag without air and cook in the water bath for 6.5 hours.
When finished, dry the tri tip and sear it for about 5 minutes per side on a hot grill or skillet. Let the tri tip rest on the counter before cutting slices against the grain and serving warm.