I was trying to get my fuel pressure and flex fuel working on Gen3 5.3. The fuel pressure sensor is wired to the green and flex fuel should be a reading in the PCM. I also noticed that my AFR error chart quit reading on my AEM 4110. I purchased the MPVI2 in 2020. I was just wondering if there was some kind of a firmware update for the VCM scanner. It was working horribly and seemed like I almost had to force it to connect to the vehicle. Still reads good but writes simple changes fast, 22 seconds.
Gen3 P59, Deka 80, 5.3, Gt45, Piece of broom stick for a cam.
Last edited by Folken; 02-17-2024 at 06:28 PM.
Reason: add one file
Have you checked for any firmware updates for the VCM Scanner to address the issues you're facing with fuel pressure, flex fuel, and AFR error chart readings?
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