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E38 or E78 ECU?

Here's a link to what I bought
https://www.ebay.com/itm/314175145846
What's your opinion fake or not?

I bought them from cdro_94 $50 for 8 and looking around their Ebay store I could see how they may be counterfeit. Sorry about the vagueness of my post. I left that info out because the injectors were...

Ebay and yes it was tuned fairly well with the previous injectors ~+\-3%

I replaced my stock injectors PN 12613412 with new AC Delco injectors of the same part number and now my LTFTs show ~15 to 25% rich. Is this normal variation for injectors? I have no idea how many...

Thanks for the support! Disabling the the injector gain did the trick. Yeah this was a very dangerous mistake and looking back was a very likely cause of when I seized my #1 rod bearing and had to...

Thanks, I will give that a try. I went through my history and I think it was changed by accident. My original ECM read had it disabled and I see the warning in HPTuners that says "caution may cause...

Since it occurred during MAF tuning and in my normal calibration which uses both VVE and MAF I thought the same thing and added airflow to my MAF curve in that 8000 Hz range but it didn't seem to...

Please help troubleshoot. My truck goes lean when in PE mode. It seems to always happen at 4000 rpm, it's like a step transition. You can see where I'm asking for ~.85 lambda and fueling accordingly...

I have a 2012 6L90 installed with OS 24261871. I am changing my E78 to an E38 along with the harness. I'm thinking I will use SPS and my pass through device to program my E38 to this VIN:
2012...

2011 Silverado 1500 now has an e78 L96 6L90 combo from a 2500. 11:1 Pistons, Trick Flow Cam 283/286, Lift .585/.585, Lobe Sep. 112, VVT delete. Take a look at this tune and scan, I occasionally cross...

I've been slowly working my way through the tuning process and wanted to post my latest scan and tune for some constructive criticism. I have a 2011 Silverado 1500 (originally a 4.8/4L60) that now...

Thanks for the help! I finally felt comfortable driving the truck outside of my neighborhood to collect more data :D. Here is my latest scan. Still having some issues where it feels unresponsive to...

Disregard what I said previously about predicted engine torque source needing to say "driver", still learning. Here is another scan with more relevant PIDs. Any feedback is appreciated.

I had a 2011 Silverado 1500 4.8 2wd 4L60 with stabilitrak. I have recently installed the powertrain from a 2012 2500, rebuilt 6.0 L96 with big cam, higher compression pistons and VVT delete. Also I...