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Old 03-20-2009, 01:24 PM   #1
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Default Boost overshoot in 4th/5th with EBC

Ok...installed the Mac air valve yesterday, playing around with the duty cycles...that is taking getting used to. All of the targets are set for 70 KPA. (10.1 psi)


1st, 2nd, and 3rd Gear make/hold 10psi to redline wont go much over that...4th will QUICKLY overshoot to the 14 psi and hit the overboost rev limit. It is annoying...part throttle/full doesn't matter.



Row 1000, 2000, and...3-4000? are 100% DC, the two rest are 20%.


Why is it overshooting so much? What can I do to fix this/what can I search for to find this answer. I can't find what I'm looking for, though I'm not sure what to search for.
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Old 03-21-2009, 03:27 PM   #2
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Any ideas.

TD04h-19T...stock wastegate...think it might just be to weak?
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Old 03-21-2009, 03:53 PM   #3
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sounds like you're boosting lower in the RPM range in 4-5th. 4000 may be too high to still be at 100% DC. Check your log and see what RPM you're peaking at.
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