mines is mapped, was mapped about 4 years ago, id like to think the gap back to its before power could be closed with a tweek of the map but i personally dont think you'll ever get it back to pre delete. Maybe on standard cars the loss might not be as big so therefore not as noticeable.
Put it this way, as these ones arnt know to fall off and go into your engine, i wouldn't of changed them out had they not been leaking.
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