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Hitting Overboost after shifting

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Old 08-27-2023 | 06:38 PM
  #1  
ninjassassin167's Avatar
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From: Springfield, OH
Default Hitting Overboost after shifting

Hello, I am working on tuning my boost control with open loop. I have gotten pretty close to my target 12psi when doing a pull in a single gear. The problem arises when I shift gears. Boost spikes up to ~14psi and I hit overboost. My Open-Loop duty table looks similar to others I have seen. Not sure if I have some sort of tuning issue or if could be something mechanical? Thank you all for the help in advance! Tune and logs attached.
Attached Files
File Type: mlg
2nd gear pull.mlg (232.8 KB, 16 views)
File Type: mlg
3rd shift.mlg (96.5 KB, 17 views)
File Type: msq
TurboTuning.msq (273.5 KB, 17 views)
Old 08-27-2023 | 09:53 PM
  #2  
rabid's Avatar
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Default

Closed loop is the answer. Open loop won't compensate for load changes from different gears. Tune your open loop so it is close. Setup closed loop.
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