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2Addicts | BMW 2-Series forum Technical Topics B58 (M240i) Engine, Transmission, Exhaust, Tuning 2021 M240i xdrive MHD Stage 2+ flex boost deviation

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      08-06-2025, 07:17 AM   #1
24Beastgav
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Drives: 2021 M240i xdrive
Join Date: Jun 2023
Location: Quakertown

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2021 M240i xdrive MHD Stage 2+ flex boost deviation

Hello,

Can someone look at my logs and see if there's any issues. My boost target at redline is 21.3 psi, but I'm only making 19.6. Is this normal or is there possibly a boost leak, the ARM charge pipe in the car has me worried that there's a leak with it.

https://datazap.me/u/24beastgav/m240...ta=4-5-7-22-36

This is with E50 on mhd flex tune, thinking of moving up to e60

(arm 6in dp, mst intake, mad inlet, arm charge pipe, fx-200, xforce cat back, xhp stage 3)

Thank you
Appreciate 0
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boost, boost deviation, e50, log, logfile, m240i, mhd flex


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