No like you said its only 2 wire. That means it has only one pickup. The wheel this pickup is looking is 36-2, as it is with most late model toyotas. The ECU can detect the missing tooth (from the assumption that the engine can only slow down a certain amount between any 2 real teeth) and then knows the next actual tooth is "home". Your haltech should be fine with this, it will mean waste spark and semi seq injection though. Are you running VVT? Which haltech is it?