I started having issues months ago and after months of quietly researching through all of the awesome threads here I have decided to get the APU1 and start my journey into '7427. The only thing that has bothered me through my research is that I have never found a BCC that matches my setup. I have a 1990 G20 L05 MD8/MXO GU4. My ECM is a '7747 86ADSU 16139461 w/ EPROM ID 16060837. I looked through all of the 1990 BCCs with L05s and I found 4 that pertain to my vehichle. ANSY, ANSZ, ANTA, and ANTB. Which none of them had an EPROM that I do. Is this because of the 3.08 upgrade ? I've read that the '7427 runs better and the data logging is better so I have one on the way and plan on repinning it. When I flash it, should I use a '93-'94 L05 BCC ?

Other than that I plan on learning like we all do. I love this stuff ! :)