I am just starting on the hptuners platform and this is my first swap. Heres a few details on the swap. The truck is a 2004 Silverado 1500, originally came with a 4.3 with the 5 speed NV3500 trans. I swapped in a 6.0 lq4 out of a 2002 Silverado 2500. The 6.0 was matted to a 4l80e auto trans, now it is with the nv3500 that came in the truck. The problem that I'm running into is which operating system to use. When I go to change the vin so the engine matches the body it says i have the incorrect operating system. The 6.0 operating system is 12202088. The operating system came with truck is 12212156. Also I haven't licensed anything yet because I want to make sure I do it right the first time. Lastly I noticed when I click the operating system it gives me options on what map sensor I am using and each one of those has a different operating system as well. I am planing on running a 3 bar map sensor when I turbo the build.
1.Should I use the 3 bar OS now?
2.Could I use the 4.3 ecm and just flash it to run the 6.0?
3.If I can not use the 4.3 ecm where can I find the correct OS and will it require additional credits?
If anyone could help or point me in the right direction that would be greatly appreciated! Thank you in advance!!