10-24-2021, 06:58 AM | #1 |
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Downpipes fitted now no boost
Someone please help had some mtc downpipes fitted yesterday and now car feels like has no boost until later on in revs like past 5k. Its stage 1 MHD mapped and was an absolute animal normally and now I can put my foot flat and not spin up? Anyone had this before?
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10-24-2021, 07:53 AM | #2 |
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Any error codes before or after the installation of the downpipes.
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10-24-2021, 06:51 PM | #4 |
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I would check to see if you have boost. I had this issue and it so happen that my boost solenoids had given out. Back to normal after replacing
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10-25-2021, 10:02 AM | #5 | |
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Quote:
also, check for a boost leak.
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10-25-2021, 08:31 PM | #7 |
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Data logging via the obdII port is going to be your best method.
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10-26-2021, 02:04 AM | #8 |
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I used BootMod3 for data logging that I actually purchased from @mike@x-ph.com
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10-26-2021, 05:31 PM | #10 |
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Right think I have found the problem one of the downpipes has broken the nipple on top of the vacuum pump so gotta find a nipple anyone know the part number?
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11-27-2021, 09:37 AM | #15 |
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+1 on the vacuum.
This is a tremendous aid in helping ya visualize where everything is on the engine. Some good sections on vacuum and the intake/boost in the document.
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12-01-2021, 04:53 PM | #16 |
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Same thingbhappened to me when i installed the downpipes on my last car (n63)
It was the vaccun hose on the back of bank one. Right between the valve cover and the firewall. |
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12-05-2021, 09:42 PM | #17 |
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You need a new vacuum pump. You can't buy just the nipple by itself.
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