What I don't understand is why none of these supposed tunes can provide a dyno? The 328i must be one of BMW's top selling models in the US, easily outselling anything with an N54/55 motor. While I realize that the turbo engines are far easier to eke extra power out of, you would think that anyone that stumbled upon a reliable N52 tune would realize the potential gold mine they were sitting on and produce some damn dynos already.
If you couldn't tell, I'm skeptical.
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