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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Boost mid/full throttle w/ logs



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      09-16-2019, 01:40 PM   #1
Milehighbmw
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Boost mid/full throttle w/ logs

I've been chasing an underboost issue for a few weeks. I always felt like my car pulled better at lower rpms so I took a few logs to comfirm. At 50 to 60% throttle I hit full boost up to 15psi. At full throttle I run 2 to 3psi below target. Is there any common reason for this?

No boost leaks
No vacuum leaks
Mhd stage 2+
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      09-16-2019, 01:50 PM   #2
Milehighbmw
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Logs are not attaching I'll figure it out.
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