Hello,
I have a 99-2000 5.3 Silverado ECM (Using LS1 Intake [for clearance] with stock injectors and SS2 Cam) that I am using for my project. I will find out the OS once I can get a bench setup. I am thinking in the future of going with Flex Fuel and probably 2 bar SD. Right now I will just run it NA MAF to get the hang of tuning. To start with, is it recommended just to use 2 credits for my initial build and then later on flash the Flex Fuel tune from the 2001 Tahoe that's on the Repository? I am assuming either way you would be spending 4 credits for the 2 ECUs and then whatever it is for the 2 speed SD add on. But could this end up not being a possibility if my OS doesn't match up with what OS the Tahoe has? Am I going about this the right way, or should I just automatically go to the 2001 Tahoe to start with (if possible) and don't bother starting tuning on the original? Also, I will need to Segment Swap to a 4L80e if that matters in the mix. I believe those are free to do though. My FUTURE plans are of course much larger injectors, 78/75 turbo, and I know the Flex Sensor is required as well. Thanks