Question: how long do you cook boneless pork ribs on grill?
Answer: Preheat grill to 225°F.
Place the ribs on clean and oiled grill with the larger, flatter side down.
Cover the grill, and cook until browned and crusty about 90 minutes (brush with the lemon honey sauce every 30 minutes). ... 
Thermometer should register 145°F when inserted into the thickest part of rib.