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      06-23-2020, 01:15 PM   #207
Dawgz
2022 M4 Comp Xdrive
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Drives: 2022 M4 Comp Xdrive
Join Date: Feb 2019
Location: USA

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Quote:
Originally Posted by frankenm View Post
Target was 18 and never went above it, logs show peak boost was 17.9 on Map 6 w/ jb4 in the run that killed it

I think that y connector for the coolant breaking has a major roll in the head gasket failing - the head gets zero coolant flow when that piece breaks and just dumps it right onto the turbo exhaust manifolds not long to overheat the aluminum and break something

I didn’t pinpoint the knock and will have to wait until tear down to determine what the issue is the engine still runs and doesn’t throw codes yet so I think I should be ok to repair the engine

Dang it should be able to take much more than 17psi

How many miles?
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