Does the PCM that comes in the 8.1L trucks have available OS upgrades to 2 & 3 Bar SD?
Does the PCM that comes in the 8.1L trucks have available OS upgrades to 2 & 3 Bar SD?
Yes ...
512Kb (P01)
2001 OS12208322 (1 BAR, 2 BAR, and 1 BAR MAF enhanced available)
2002 OS12216125 (1 BAR and 2 BAR available)
1Mb (P59)
2003 OS12579405 (all VCM enhancements are available)
2004 OS12587603 (all VCM enhancements are available)
Just took a quick look ... no doubt there are probably more options available for the 8.1L.
If your specific OS doesn't have what you need, just write entire with another OS from a 5.3/6.0 or even an LS1/LS6 if you've got a compatible year...then copy the stuff that makes the 8.1 run into it.
2010 Camaro SS M6. Stock Bottom End, Heads/Cam/Intake/Headers/Exhaust.
2005 Silverado RCSB. Forged 370 LQ9/Borg-Forced Inductions T6 S484/Jake's Stage 4 4L80E with D3 Brake/4WD.
2023 Durango Hellcat