Hello everyone been building and tuning analog engines and trans for quite some time but this is my first attempt into the LS Tuning world I currently have 2 5.3 liters one out of a 2002 Tahoe OS Version: 12216125 that will be going in a 51' Chevy 3100 with a 4180e (Hopefully) and a 2004 All wheel drive Suburban with a 5.3 OS Version: 12606960 the only test I have done so far on the 04 burb PCM was disabling the P0449 DTC which worked fine but starting now to get a little more in depth with it. Will be adding a .560/.560 lift cam to the 04 and will need to adjust the IAC and the fuel tables but if anyone has any suggestions I am all ears.