Hello, I just did an engine swap on my vehicle and want to correct the mileage, does anyone here provide any services with decoding a bin file/changing the miles. I tried to do it myself but could only change it to a few numbers and don't really know what I'm doing. I have a few bin files with different mileages that I am trying to compare to and trying to figure out where its stored and all of the checksums and whatnot.
if anyone here has any knowledge or experience that can help me I am willing to pay for help as I have been at this for over a week without much luck.
thanks.
The chip is a 93c66 and i am using Xgpro with a T48 programmer to read the chip, and an online site to modify the bin file.

 

EEPROMs like the 93C66 are small memory chips storing critical vehicle data. They often contain odometer information, which is encoded in repeating hex patterns. When you read the chip with your programmer, the dump file shows raw bytes. By comparing two or more dumps, you can usually spot the regions that differ. These differing regions often correspond to stored mileage values and their backups.
To compare, open your bin files in a hex editor such as HxD. Scroll through the data while checking for sequences that change consistently between dumps. The offsets showing differences are likely where mileage is stored. You may also notice checksums ensuring data integrity across the cluster. These can complicate editing because incorrect values prevent the cluster from accepting changes. A professional service can finalize corrections legally and safely.

 

what is the reason to tamper with mileage?

 

We don't know where you are, but in the U.S., altering the odometer reading to show a reading other than what the chassis of the car has traveled constitutes fraud, violation of Title 49 U.S. Code 32703.

 

EEPROMs like the 93C66 are small memory chips storing critical vehicle data. They often contain odometer information, which is encoded in repeating hex patterns. When you read the chip with your programmer, the dump file shows raw bytes. By comparing two or more dumps, you can usually spot the regions that differ. These differing regions often correspond to stored mileage values and their backups.
To compare, open your bin files in a hex editor such as HxD. Scroll through the data while checking for sequences that change consistently between dumps. The offsets showing differences are likely where mileage is stored. You may also notice checksums ensuring data integrity across the cluster. These can complicate editing because incorrect values prevent the cluster from accepting changes. A professional service can finalize corrections legally and safely.

i think i’m just going to send it out and have a company do it for me

 

We don't know where you are, but in the U.S., altering the odometer reading to show a reading other than what the chassis of the car has traveled constitutes fraud, violation of Title 49 U.S. Code 32703.

it’s not a car or an on road vehicle so it doesn’t apply, thanks for the concern but i already checked all the laws and none apply to my circumstance

 

it’s not a car or an on road vehicle so it doesn’t apply, thanks for the concern but i already checked all the laws and none apply to my circumstance

out of interest
why ?

normal would be just to make note of what mileage engine was changed,

so why do you actualy want the millage to change ?

 

it’s not a car or an on road vehicle so it doesn’t apply, thanks for the concern but i already checked all the laws and none apply to my circumstance

Just to be clear: In the U.S., the federal code doesn't differentiate between on-road, off-road, car, truck, farm vehicle, etc. If the odometer is on a motor vehicle, it can't be altered, period (but again, if you live elsewhere, YMMV). If you want to keep track of actual engine use, you're better off using an hourmeter anyway, since most vehicles spend a not-insignificant amount of time at idle.

 

Just write down what you know is the current reading vs actual mileage and use that as your starting reference point.

 

who is the engine manufacturer?