Trim any hard fat or silver skin from the tri tip.
Season the tri tip with BBQ Rub and add thermometer to the thickest part of tri tip.
Add pellets to NWG pellet hopper.
Set NWG to smoker setting at 250F (121C). You can leave the default time as is.
Hit the start button and let NWG go through the ignition process.
Add the tri tip to the NWG and shut the lid.
Smoke the tri tip until the internal temperature hits 115-120F (46-49C).
Remove the tri tip from the NWG.
Move dial on NWG to Grill setting High at 10 minutes, hit start and let it run through the pre-heat process.
Add the tri tip back on the grill and sear both sides. Flipping every 1 minute until the internal temperature hits 130F (54C) In the thickest part for medium rare.
Remove tri tip from NWG and let rest for 10-15 minutes.
Slice the tri tip in half where the two grains of the tri tip meet.
Then slice those halves against their grains. Thin slices are best.