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Old Nov 10, 2008 | 05:33 PM
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Regenstein
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Boost problems
My boost is peaking at 25psi but its dropping way to much and to fast. Its supposed to taper to 21psi but its dropping all the way back to like 12-15psi. What could be causing this, how do i fix it?
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Old Nov 10, 2008 | 05:36 PM
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wevo1985
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From: kingston,ny
do you have any exhaust leaks before the turbo? any odd noises?
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Old Nov 10, 2008 | 05:39 PM
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no nothing out of the ordinary
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Old Nov 10, 2008 | 05:42 PM
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pupo
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What method of boost control are you using, MBC or vi ecuflash?
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Old Nov 10, 2008 | 05:44 PM
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boost leak maybe?
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Old Nov 10, 2008 | 05:44 PM
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From: kingston,ny
did you change anything on the car before this happened? is your forge dv adjustable? maybe someone loosened it.
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Old Nov 10, 2008 | 05:45 PM
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From: Maine W/NJ Tags! FTP!!!
Until you do a boost leak and rule that out we really cant help you. Start with a simple boost leak test than report back.
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Old Nov 10, 2008 | 06:00 PM
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I haven't changed anything but i think there may be an exhaust leak. But wouldn't that cause my boost to not peak where i want it. I want to change my BC to an electronic but its expensive
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Old Nov 10, 2008 | 06:03 PM
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Check her for boost leaks..
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Old Nov 10, 2008 | 06:33 PM
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could it be my wastegate opening to soon?
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Old Nov 10, 2008 | 07:01 PM
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Originally Posted by Regenstein
could it be my wastegate opening to soon?
This is a real possibility. You need to adjust(shorten) the the length of the actuator rod, and check to see that the DV isn't lifting prematurely. In which case you could crush it a wee bit.
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Old Nov 11, 2008 | 06:29 PM
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Thanks everybody I will look into your suggestions. Hopefully I find the answer
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Old Dec 1, 2008 | 11:05 PM
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My problem is solved. It was my MBC. I changed it out and no more boost loss. Plus checked for an exhaust leak and that came back negative. Thanks everyone for your help.
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