2003 WRX Boost surging / cutting out problem in 3rd, 4th and 5th
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This is a discussion on 2003 WRX Boost surging / cutting out problem in 3rd, 4th and 5th within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Hello, I am having a problem with the boost surging/cutting out when I get on it fairly hard. It is ...

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    2003 WRX Boost surging / cutting out problem in 3rd, 4th and 5th

    Hello, I am having a problem with the boost surging/cutting out when I get on it fairly hard. It is very noticeable and you can just tell there is something wrong because sometimes it does it bad and sometimes not so bad and between these is a huge difference. When it happens it basically sounds like a rush of air happens...running strong then that rush goes away for a second..power loss...comes back power back. The only time I really notice it is in and past 3rd gear when I'm hammering it down pretty good. It has done this for a long time and I can't figure it out. The car is a cobb stage 2 with uppipe, downpipe, turbo back.

    This has finally annoyed me to the point of fixing it so any ideas of what it could be would be great!! I have the accessport but haven't messed with it much past the point of installing the map, so any assistance with logging data to help pinpoint the issue would also be nice.

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    Registered User teflon_jones's Avatar
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    I'd start with cleaning your MAF.
    Scott
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    How many miles has it been since spark plugs, and or coil packs? Do you have an codes or a CEL?
    Last edited by blakekawalec; 12-26-2011 at 06:03 PM.

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    Master Baiter EJ257's Avatar
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  6. #5
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    I will try cleaning the MAF tmw. I honestly don't know how long it has been since plugs/packs because I bought the car a year ago and haven't changed the plugs yet...yeah lazy but will get on it

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    Do you have a check engine Light?

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    No CEL since I installed the AP

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    Could be something to do with the wastegate.

  10. #9
    Moderator Donkey's Avatar
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    Sounds like the boost cut. What car and is the downpipe catless?
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  11. #10
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    Possibly over boosting?

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