This may be stupid and if it is sorry
What makes an governs a motors obd? As in if you had an lsvtec a b16a2 head but a 92 integra ls block what obd would that motor be?
Or if you had a b16a2 from a 99-00 civic si head with a jdm obd0 b16 block what obd would that motor be?
Thanks for looking