If I currently have a P01 running OS 9373372 (1999 5.3 truck)
is there a way to get the 12212156 OS (2001 5.3 truck)
I got really familiar with my 12212156 and then my newest build is a couple years older and the tables are confusing me. (Secondaries and what not)
Is this something that can be done? and can it be done with HPTuners? I have both tunes licensed.