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boost question after stage 2 upgrade

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boost question after stage 2 upgrade

Old 06-01-2019, 12:59 PM
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Default boost question after stage 2 upgrade

Hi all,
I just upgraded my car to a stage 2 tune (Chip + turbo inlet + cat back exhaust + dv) and wanted to ask if I should be concerned about the following, I was doing some runs and during one of them I had the boost peak briefly at ~28psi. Graph enclosed.


2001 Audi TT 225Q (AMU)
Wagner Intercooler
forge turbo inlet hose
forge 008 DV
forge DV relocation
42DD CAT back exhaust (with high flow CAT)
EuroCustoms Stage 2 tune

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Old 06-01-2019, 07:16 PM
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28 psi is a lot. Boost is higher when outside temps are higher ( correction for air density) Still though. Surprised you did not get an over boost code and limp mode. Mine is APR and peaks at about 24 psi on a warm day. Tails off as rpm rises above 5000 or so.
Check the hose from the Boost pipe to the N75 and from the N75 to the wastegate actuator. Leaks there can cause over boosting.
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