BMW 1-Series Forum (F20) 135i - 1Addicts.com > Second Generation 1 Series Forum > 2012 BMW 1-Series Sporthatch (F20) Discussion > N55 PWG Stage 1 Pure Turbo and MHD
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      08-18-2021, 08:27 PM   #1
lukevl
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Drives: F20 M135
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N55 PWG Stage 1 Pure Turbo and MHD

Hi I've just rebuilt my motor and it doesn't seem to run well. It keeps getting the '120408- Charging pressure control' errorsUnsure if this is because I have a stage 1 pure turbo and it doesn't like the MHD off the shelf maps. Anyone run something similar with the MHD OTS maps? Tuning options are not great in my area (Brisbane, Australia)

F20 M135
N55 PWG
Stage 1 pure turbo
VRSF 6.5" cooler
VRSF Cat down pipe
Aftermarket charge pipe
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      08-21-2021, 07:20 PM   #2
lukevl
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Never mind turns out I have a busted exhaust vanos gear. Started making boost though and it goes great at 15psi even with no exhaust vanos function!
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