EJ253 Subaru Engine - AustralianCar.Reviews: #1 for ...
It is understood that the EJ253 engine had a MAF (mass airflow) sensor rather than a MAP (manifold absolute pressure) sensor for more accurate measurement of intake air volume. Furthermore, the EJ253 engine had a compression ratio of 10.1:1; the injection and firing order was 1-3-2-4.
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