[arpad_m]

Originally Posted by Chrome383Z

I’m still wondering how they are going to determine if a car is tuned. That’s not an easy process I wouldn’t think. I’m not a software guru so I don’t really know. But I would imagine if a dealership reflashes an ECM it’ll change the checksum or whatever it is. How will they determine if the tune is stock or not?

Seems like a huge project to capture all of the stock ECM data for all MFGs. Unless I’m missing something…

I bet what they'll do is make it binary: if the calibration ("tune") has the same version and write count as the OEM calibration from either the factory or the last authorized dealership update, you're fine, otherwise you're fined. The people wanting to enact these regulations aren't exactly the kind that's willing to think about the potential of harmless or even emission enhancing tunes.