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      10-26-2023, 07:39 AM   #1
Rs-Shade
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Drives: 335i E90
Join Date: Oct 2023
Location: United States

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2009 BMW 335i  [9.00]
Hello all I have recently upgraded from a 5” ic to the bms 7.5” stepped ic and am enjoying the much lower IATs. But I noticed when doing a pull that boost would slowly decrease as the rpm’s went up. What could be the cause of this?

Here’s the log from said pull ⬇️

https://datazap.me/u/rs-shade/losing...og=0&data=3-20

This is a log from when I had the 5” for contrast ⬇️

https://datazap.me/u/rs-shade/log-16...og=0&data=3-20
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