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2010 2011 BMW 5 Series Forum F10 Pure Stage 2 BM3 Boost drop off at 5000 RPM |
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11-16-2019, 04:15 PM | #1 |
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Pure Stage 2 BM3 Boost drop off at 5000 RPM
Anyone have this problem on the F10 535? I've already had it tested for boost leaks and vacuum leaks and non was found. It will overboost at 4K RPM and under boost from 55K RPM.
http://www.bootmod3.net/log?id=5dcd08e0c090c64ba0b7e77e
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PS2, Wagner FMIC, XDi-60, Fuel-It! Stage 2 LPFP, Mperformance Mufflers, BM3
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11-16-2019, 04:28 PM | #2 | |
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11-17-2019, 03:58 AM | #4 |
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I have PWG. I also replaced the boost solenoid. It did not help.
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11-17-2019, 03:59 AM | #5 |
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Yes I got the FTP turbo inlet also.
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11-17-2019, 04:13 AM | #6 |
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By the way Stück I've been following your build threads for awhile to help me in my build. Thank you for your posts.
This under boosting problem is getting very frustrating. I think I've spent $1000 just for diagnose and changing out parts that did nothing to solve the problem. I have stock intake with just a drop in filter , an AR catted DP, and stock exhaust pipes from cat back. Are these too restrictive for the boost I'm trying to make up top? The turbo overboost like crazy at 3-4K RPM, but after that it will just drop off a cliff. |
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