Quote:
Originally Posted by icabod7
Thanks for the info 135i vs
I'm interested in this part of the bulletin:
Aftermarket N54 DME software modifications usually do not change either programmed or basic DME part numbers, so it is not possible to identify this alteration via DME identification pages.
Sounds like they are talking about flashes and not piggybacks here -- sound right?
In certain cases, the MSD80 DME software modifications can be detected by executing test module "S1214 NG6OBDII/Read codes" (reading of the OBD readiness codes). If the readiness code for the "Fuel Tank Ventilation" shows "XXX" (instead of "yes" or "no"), this is an indication that evaporation system function is not supported by the DME and the original BMW software was altered. (In this situation, when using the aftermarket scanning tool for checking readiness monitors, the Evaporation System status would be displayed as "Not Supported".) [emphasis added]
Presumably, this means that if you fail your inspection because of readiness issues, then BMW would be able to detect the aftermarket tune. Am I reading this correctly?
Another issue entirely, is if this is the GT1 system that BrokenVert and Dackel are talking about. Hopefully it is.
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Yes, they are talking about piggyback tunes, this is why they created the software in this bulliten (lastest released) to output codes, 2D18, etc.
Regarding the emmisions, there is a way you have to prepare the car to pass inspection. All monitors have to be in "Ready" mode. If any is "Incomplete", it will not pass inspection.
To get a tuned car in ready mode, the piggy back needs to be turned off, the car needs to be driven about 100 miles and have at least 3 start/off cycles. I would connect a scanner and confirm all modes are in "Ready" mode before attempting to get an inspection.