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Boost just drops right off

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Old Oct 22, 2025 | 11:08 AM
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Leloby's Avatar
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From: Larbert
Default Boost just drops right off

3dr. Stage 2. L6. Fresh rebuild. No leaks. Boost builds lovely, hits 12psi then drops to nout - revs rise, no power.
I can hold it at 10psi all day but push it further and turbo just kind of “cuts out”.
Any ideas folks?
cheers.
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Old Oct 25, 2025 | 06:41 PM
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[QUOTE=Leloby;6840693]3dr. Stage 2. L6. Fresh rebuild. No leaks. Boost builds lovely, hits 12psi then drops to nout - revs rise, no power.
I can hold it at 10psi all day but push it further and turbo just kind of “cuts out”.
Any ideas folks?
cheers.[/QUOTE what map sensor you have right now
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Old Oct 26, 2025 | 08:17 AM
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From: Larbert
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what map sensor you have right now?

It’s a proper 3 bar MAP. I’ve tried others too.
Just found that the battery isn’t charging and the alternator is reading 16.5V.
Ill need to investigate the wiring as this is most likely the cause of the issue.
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