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So I have to wonder what the differences between the *25i and *28i engine are to begin with? Is it strictly the ECU, or are there other differences such as exhaust? If just ECU, you have to wonder why the PPK didn't go the full way to 245 PS or whatever the exact specs of the *28i engine are. I suppose it all boils down to marketing. Dyno test may show that power is equal to a 328i (or 228i, once they are available).
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