Software A631RR1522704 Delco E39A
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
Cadillac CTS 2.0 Turbo 272hp
ECU
Delco
E39A
Siemens
Hardware / part numbers
12661156
Read with
bFlash OBD
Modifications available
- Stage 2 / 3 ×1
- Pops & bangs ×1
Have the read? Upload it.
Upload your read →
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.
See files & prices →
The stock or modified file exactly as we hold it, to write with your tool. Make sure your ECU carries
A631RR1522704 and the same hardware number.Vehicle pages: Cadillac CTS
Files are supplied for off-road / motorsport use; checksums are corrected by your flashing tool on write. Last project update 2026-04-10.