I have a quick question. Is COS5 available for an 04 OS
I have a quick question. Is COS5 available for an 04 OS
05 LLY CC/SB D/A, EFILived to the tune of 530rwhp.
It is not available at this point in time.Originally Posted by 1000HP
Any ideas on when COS5 will be availabe for an 04 OS, specifically 12587604?
what kind of parameters are there for the pin 56 activation?? RPM, Coolant temp, etc.?? is it like the fan controls?
Here is the relink to that thread: showthread.php?t=2599
What custom OSs are available for later year GMs?
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