Oh wow I actually pasted what Terry wrote about the
ewg wires from the jb4tech forums and then posted my log file instead of a screenshot. It seems to not analyze the screenshots as well if you are hovering over the numbers.
But once it a analyzed it recommended to lower the ff number a bit:
Summary it said:
JB4 is working as expected and preventing catastrophic overboost.
You are hitting minor overboost, which could trigger codes on sensitive ECUs.
Recommend lowering FF slightly to bring boost targets into safer alignment.
Watch AFR during transitions — if consistently lean, consider fuel tuning or map adjustments.
Here’s a breakdown based on the plot:
Boost vs Target: The actual boost (blue) closely follows the target boost (red) early on, which is a good sign of boost control health. However, there is a noticeable overboost condition early in the pull, where actual boost exceeds the target by a few PSI.
WGDC Behavior: The Wastegate Duty Cycle (magenta) starts high and ramps down, which suggests the ECU is trying to reduce boost. The sharp drop in WGDC later likely contributes to the tapering boost levels.
ECU PSI: Tracks closely with boost early but drops sharply with WGDC—likely safety intervention or throttle closure.
Overall, the log shows:
Generally healthy boost control initially.
An overboost condition early on, likely requiring tuning adjustment or mechanical review (e.g., wastegate crack pressure).
WGDC behavior responding appropriately, but the aggressive drop might indicate the ECU is pulling back for safety.
Let me know if you want to dive into AFR, timing, trims, or any knock events too.
