Reverse Engineering 12587603

They go by many names, P01, P59, VPW, '0411 etc . Circa 1999 to 2006. All VPW OBD2 PCMs.
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Joined: Wed Dec 06, 2017 1:02 pm

Re: Reverse Engineering 12587603

Postby Vampyre » Sun May 10, 2020 8:08 am

might your anonymous friend have any data for p04s, ive spent last few days labeling the bin in ghidra from a the data in tinytuner and it doesnt have near all of them

Posts: 49
Joined: Sun May 11, 2014 6:36 pm

Re: Reverse Engineering 12587603

Postby Highlander » Mon May 18, 2020 8:12 am

roughneck427 wrote:6960 OS was an update for the 7603 as well. There were no vehicles with the 6960 OS that had a 4l80. I have cut the trans and trans diag and speedo segments in hex from the 7603 and put them in the 6960 and it worked fine. I see this more for guys using other tuning suites that would have to pay for credits to change the OS. I have tested the same method on a 99 calibration as well. As long as the segment length is the same size you can plug it in.

I also tested this same method on E38. On swaps the speedo on the scanner will read 158mph for an E38 auto trans calibration. I cut the system segment from a manual car and plugged it in a truck auto calibration and it fixed the speedo issue these were non matching OS. Again on this the segment length was the same so the file size never changed

It reads 158 because the ECM is expecting the Speed from the bus and its not there. Or at least the validity of it.


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