That looks great. I am amazed that you could take it to 145 and still be pink... I pull mine, after a sear about 132 or so. But then I like to let it rest under a foil tent for 20 minutes or so.
Really glad that tri-tip is becoming more available across the country. It is a great cut of meat with a unique flavor, IMO.
Large Big Green Egg, Cold smokehouse,
UDS with hinged lid, Santa Maria pit
26.75" Weber OTG, Weber Performer, WGA
MAK One Star General Pellet Pooper
Hasty Bake Gourmet
Custom wooden handles for BBQ's made by Marty Leach (oh, that's me)