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      05-13-2026, 02:14 AM   #6
timchump
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Drives: 135i Coupe DCT N55
Join Date: Jun 2021
Location: UK

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when i did a test as pictured i put a pung in the breather pipe.

i thought i closed the loop, as when i fist did the test smoke was indeed coming out it

if i remove the oil filler cap after about 10 minutes of trying to pressurize the system i do get a slight hiss, release of pressure so it is pressurized only very slightly not enough to register any pressure on the gauge

reason im testing is i was only getting 0.5 bar of boost on an MHD stage one map, i found a crack in the charge pipe coupler, replaced with an mmr aluminum one,

now im getting about 0.85 bar of boost but the target is 0.95 so i think there is still a small leak in the system somewhere

edit there is no smoke coming out anywhere and the system doesn't appear to be building any measurable pressure

Last edited by timchump; 05-13-2026 at 08:28 AM.. Reason: edit
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