In case anyone needs this info here is how it went with the Monster. My engine is a 496(bored and stroked) and had a custom dominator intake with sequential fuel injection. OEM sensors (MAP, MAF,IAT,...

Thank Gentlemen. I think I will flash the 2156 OS to the truck and see if it is better than the hack job I created from the 8322 OS. Thanks ralmo for the suggestion on how to go about tuning.

So I got to looking at this 12212156 OS and the VE table is very different from the original one from the stock 0411 PCM, which is leaving me confused. The Stock one is fro a 5.7 and the one...

Thanks for this! I assume I should be able to view this with the same xdf I have been using for my 0411 bin.(12208322.xdf) I was wondering if that would be the case, with my stock injectors being too...

I think I am getting my butt kicked by this part. I really have no idea what I am doing but I have spent Probably 40 hrs over the last few weeks reading stuff and trying to understand tuning. I did...

I have completed the swap! and it runs, but not real well. I did a lot of research and barely understand the process of tuning. I have been using PCM hammer and protuner (because I am cheap) But it...

I made a lot of progress on this. I completed the swap and once I disabled VATS and changed the VIN it started up. Today I am working on wiring in the 4 PRNDL wires and trying to get the TPS to have...

Thanks for the Welcome! So, progress report. I made it out to the local "you pull it" Junkyard today and picked out two 12200411 PCMs with connectors (In case I ruin one) for $40. I cleaned the gunk...

Awesome! Thanks for your willingness to help. I will reach out later if I need help from you with the HP tuners side of things

Ralmo, Thanks for the reply. Did you do any tuning on the 0411 after you got it? My engine is a 7.4L and I have also modified it to a 496 (approx 8L now). I have been looking into the 0411 swap and...

First of all, thanks everyone for being so cool and helpful! So I guess I did my project backwards. As an oldschool car guy I built the motor for my 1999 c2500 Suburban first and then hoped it would...

Looks like this is what I will need to do as well...

So I wanted to join the forum in order to get some help with tuning my 1999 c2500 7.4L Suburban. I just received my OBDXpro cable today and I'm hoping against hope that I can find an xdf and or ads...