Software 55499969 55489650 55500367 55491452 5551
1 master project carry this software number, 1 with a modified version. Upload your read to have the tune transferred into your own file, or buy the file exactly as we hold it by software number. Modified files from $275, original (stock) files from $75 AUD. Trade accounts see their own pricing after log in.
Fitted to
Holden E98
ECU
GM
Hardware / part numbers
—
Read with
any full read from your flashing tool
Modifications available
- EGR off ×1
Have the read? Upload it.
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Your own file comes back with the modification built in, checked for a 100% match before it's offered.
Can't read the ECU? Buy by software number.
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The stock or modified file exactly as we hold it, to write with your tool. Make sure your ECU carries
55499969 55489650 55500367 55491452 5551 and the same hardware number.Vehicle pages: Holden E98
Files are supplied for off-road / motorsport use; checksums are corrected by your flashing tool on write. Last project update 2026-05-01.