boost fluctuation WOT,...WTF? (03 wrx) - Page 2
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This is a discussion on boost fluctuation WOT,...WTF? (03 wrx) within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; i bought the car with 116k, it now has 130k. it has always fluctuated since iv got it. no cels ...

  1. #16
    Registered User
    Join Date
    Nov 2011
    i bought the car with 116k, it now has 130k. it has always fluctuated since iv got it. no cels or dtcs. i have a snap on moddis 2 scan tool and it passed all test.

    garrett, engine is in great running condition, no taps, no knocks, no leaks, great compression. why would i replace it?

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  3. #17
    Registered User 06scoobyrex's Avatar
    Join Date
    Feb 2010
    I think the previous owner didn't completely return it "back to stock" prior to selling it to you. Take it to a tuner and do some datalogging and you should be able to see a problem.
    Hawk-Eye Alliance #801
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  4. #18
    Registered User
    Join Date
    Nov 2011
    that would make sense,...but wouldnt the reflash from the cobb access tuner fix that? it re-maps the wategate duty and boost targets

  5. #19
    Registered User teflon_jones's Avatar
    Join Date
    Apr 2007
    8000' up in Colorado
    Garrett's post is probably because you weren't paying attention to questions people asked (like me) and posting the same thing over and over again...

    You've kind of done that again where scoobyrex has given you the next steps to figure out your problem, you say it makes sense, yet question the answer again.

    Take it to a tuner for datalogging. You've had these problems since you got it, so there's no way to know what might be causing them in the absence of any codes or blatant red flags.

    Quote Originally Posted by teflon_jones View Post
    While Cobb support may have said the turbo inlet was ok, their map notes clearly state it is not. You also have equal length headers, again not supported by the map you're running. The fact that the issue existed before you installed them is a red herring. You introduced a new variable into the equation that may be causing problems, but there's no way to know because the car was already running badly before the change. In order to troubleshoot the issue now, you need to be running a tune that is correct for the mods on the car. Put the stock headers back on and the stock inlet to start with.
    Did you read this?
    Past Subies - '11 STI Limited stage 1+ and '04 STi stage 2+
    '13 Wrangler Rubicon - custom front bumper w/12k lb winch & off-road lights, skid plates, diff guards, etc.
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