need help completing engine swap

i recently replaced a 99 d16y8 for a 96 same model. the 96 was a rebuild from a reputable shop. car started right up and was running fine until it warmed up thouroughly. what should i be looking for? are these years compatible? should i be looking at the ecu? almost everything else was replaced on the car prior to engine swap.


RHD is where its at
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So whats it doing after it warms up?

Any cels?

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