Quote:
Originally Posted by stlgrym3
One downside for ecutek is once flashed, the trace will be detectable in ECU unlike OpenFlash you can completely remove it before going to dealer for warranty works. Is this true? Any way to get around it?
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Quote:
Originally Posted by Kodename47
Sigh.....
To be "able to tell" if a car is tuned will require more equipment that a dealer has. They certainly can't connect to the ECU and it tells them that a car is tuned.
The EcuTek license will remain in the ECU so this could be picked up by forensic checking of the ECU but this is not something the dealers would do, but Subaru/Toyota. If an EcuTek tune is on the ECU then the dealers will not be able to re-flash the car. If you flash a stock ROM on with EcuTek this is not the case but then if the dealer flash over it you will lose the EcuTek license. Then again if the dealer flashes over an OFT file then you could have your CalID changed and cause issues with the marrying of the device.
TBH I don't know why you'd bother to go back to stock, I never did on my car. Then again the US dealers seem more likely to reject claims....
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Unfortunatly the dealer can easily check with their tool.
however a kodename 47 said it not a routine practice unless they are looking for evidence, and required a little research by the dealer technician.
They need to read the CVN and the Calibration ID then look up and compare the values.
Parameter called CVN Calibration Verification Number is available via dealer tool, this is basically a checksum of the flashable area 8000-13FFFF
each stock rom has a set CVN, so they would need to look that up and compare it with the CVN read from vehicle. If its different to stock rom of same calid , bingo got you.
this is different to the Calibration ID which does stay same ie like ZA1JB01C or whatever it is.
[18:27:03.414] CALID : ZA1JA01D
[18:27:03.429] CVN : ED0690B9
[18:27:03.429] VIN : JF1ZNAA12D272
Any type of tune from any tune system will be detectable as CVN will be different from a normal stock rom of same Calibration ID
with Ecutek the embedded licience will alter the CVN as its a 14 byte string just after 8000 hex in the flashable checksummed area of rom, so even ecutek "stock" roms are detectable.
It possible to remove the ecutek licience with ecutek using a special switch then flashing, but in doing so you will loose your ecutek licience and need to get it renewed or buy a new one.
or if you wrote over your stock ecutek rom in ecu with another flash tool again licience will be lost. this also happens if dealer reflashes your stock ecutek rom in ecu.
any modified ecutek rom has access keys changed to dealer cannot read or write rom , but they can still run diagnostics and read stuff like CVN and Calid and discover rom is not 100% stock.
note the "flash counter" you see in ecutek is put their by ecutek its in that 14 byte encoded string, so its not readable or useable by dealer.