I've looked it over pretty good and other than a "voltage stabilizer" that's in the trunk by the FPDMs, the only other thing I see different is some kind of box the fuel line runs through on the passenger side. At first I thought it was a filter, but it doesn't appear to be serviceable. Someone suggested it's some kind of cooler? I'm also not sure this is unique to the 170, might be on other 2023 models.
View attachment 141256