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12-02-2023, 10:27 PM | #1 |
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135i boost leak any ideas?
Hey guys recently I’ve had a underboosting issue on my 135i N55 pure stage 2 turbo
New vacuum lines New boost solenoid Divider valve was done 10k miles ago and so was most of the pure stage 2 work. The underboost is extremely consistent I’ll link logs but it looks to be hitting the same numbers over and over weeks apart. Would a boost leak do that? https://datazap.me/u/jackwigington/rest?log=0&data=4-15 https://datazap.me/u/jackwigington/s...og=0&data=4-15 Could it be my turbo? |
12-06-2023, 11:44 PM | #4 |
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Not exactly no. I haven’t had to much time and am going outa town at the end of this month so I’m dropping it off to get boost leak tested.
All I’m basically asking is if a boost leak could cause that consistent of boost level shown across all three logs. I’m not leaning towards the diverter valve but still any answer to that question would help tremendously |
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12-06-2023, 11:50 PM | #5 |
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Boost leak test is required given you have done the other stuff. I would ask the shop to test to 25psi.
I pressume you have upgraded inlet, charge pipe, intercooler and pipework? |
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12-06-2023, 11:51 PM | #6 | |
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But yes everything else has been done to support the ps2 turbo |
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12-06-2023, 11:54 PM | #7 | |
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Do you know if a boost leak can cause that issue? |
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12-07-2023, 12:00 AM | #9 | |
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I have but again it was my first ever time performing one and to be completely honest I was rushing as I needed the car to just run and drive for a little while this month so it is very possible I could’ve missed a boost leak. But the reason I started this thread is I’ve never seen anyone else’s boost leak logs look as consistent as mine that’s why I’m worried it’s something else |
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12-07-2023, 12:03 AM | #10 |
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Ok.
I will have a closer look on my pc later on a logs. To hard on phone. Boost leaks can be very consistent. Have you tried a ots mhd map for comparison? |
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12-07-2023, 12:05 AM | #12 | |
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I have reflashed the tune a couple of times (getting different gas I know is bad so I put some e85 in it to make sure the car liked it haha)and the same thing happens |
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12-07-2023, 12:08 AM | #13 |
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