"The BIG BOV thread" (Where all bov question threads get merged) - Page 334
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This is a discussion on "The BIG BOV thread" (Where all bov question threads get merged) within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; take a minute and look at teh stickies on the parts fo teh forum....

  1. #4996
    Registered User br3ez's Avatar
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    take a minute and look at teh stickies on the parts fo teh forum.
    2005 WRX
    UTEC Stage 2 (Catless)

    250.02 WHP
    249.27 WTQ
    Junior Tuned

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  3. #4997
    Registered User scooby-x's Avatar
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    Dyno tune my man, dyno tune, it fixes all!!!
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    Patrick, you are a complete accident

  4. #4998
    Administrator Trainrex's Avatar
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    This subject has been touched on a few times. An intake will make your car run lean at higher rpms. A BOV makes it run rich between shifts. The points that they occur are different, thus they will not cancel each other out.

  5. #4999
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    nope, it couldn't be if the problem was not recreateable. sounds electrical to me. i have had a few "unexplainable" moments that i can only point to ecu mistakes. i find that aftermarket bov's run perfect when run hard, its everything in between that dosent live up to stock.

  6. #5000
    Registered User Timdog1650's Avatar
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    Like andrew said...they don't act at the same time. Please search in the future...this is like asking a jew "don't you guys have a holiday with a big candle holder in december?" It's like....basic WRX knowledge.

  7. #5001
    Registered User STiguy's Avatar
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    If you really really want a blow-off valve, get a recirculating one. I have had 4 blow-off vavles and the Worx adjustable one is the best.
    LISC #1
    05 STi - 300whp 331wtq 1/4 - 12.7 @107.4 (SOLD)
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  8. #5002
    Registered User Timdog1650's Avatar
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    If you think the problem is your blow off valve, spend 20 minutes of your time working on your car to diagnose it. Put the stock one back on, drive around the block, see if the problem still happens. Owning a car with modifications that many people have proven to cause problems involves more than just asking others on the internet. If you notice something, do some self diagnosis so you have an idea of how things work. At the very least you'll either realize your aftermarket BOV is crap or you'll get really good at swapping in the stocker. either way....don't let me hurt your feelings when I say this, but figure it out yourself.

    ~Tim

  9. #5003
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    exactly WHEN did the jerk occur? right before throttle lift/clutch? during the rowing of the gears? during throttle tip-in and reapplication of power after the gear change? any CEL?

  10. #5004
    Registered User zapman's Avatar
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    Quote Originally Posted by ride5000
    exactly WHEN did the jerk occur? right before throttle lift/clutch? during the rowing of the gears? during throttle tip-in and reapplication of power after the gear change? any CEL?
    it occured when i let off the gas/put the clutch in. I decreased the spring pressure in the bov, it is a turboxs rfl, and haven't had any problems since. When it happened the cel flashed but went back off once i got it under control again. I went and had my codes checked today to see if it recorded anything but it didn't.

    i did do a self diagnosis, figured it was my bov, but i was just checking to see if anyone had ever had this problem before and to see if there was anything else simple i might have overlooked to check. sry, my first post wasn't very specific that i had already done a quick diagnostic myself.
    Former member of bugeye mafia

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  11. #5005
    Registered User Timdog1650's Avatar
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    Yeah, that pretty much sounds like the BOV needs more spring pressure. Didn't mean to sound snippy....but it's very common/infuriated to get the "omg I modded my car and now it doesn't feel perfect anymore" threads and lose it on them

  12. #5006
    Registered User hellafastWRX's Avatar
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    I had the same problems with the RFL. Its now sitting on my desk right next to me. No problems anymore
    --Chris
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    04 WRX wagon - 304whp Mods - SOLD
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  13. #5007
    Registered User zapman's Avatar
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    Quote Originally Posted by hellafastWRX
    I had the same problems with the RFL. Its now sitting on my desk right next to me. No problems anymore
    did you try adjusting the spring pressure? i have a feeling i will be swapping mine off when i get home too.
    Former member of bugeye mafia

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  14. #5008
    Registered User HiCkS's Avatar
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    here is my experience with my car running lean with an intake

    before TXS shorty intake 322 miles on 1 tank of gas 93 octane (gas light on) / 15.9 gal tank (carsdirect.com)

    equals = 20.3 miles per gallon


    After TXS shorty intake 326 miles on 1 tank of gas 93 octane with gas light on / 15.9 gal tank

    equals = 20.5 miles per gallon

    0.2 miles per gallon X 15.9 gallons = 3.18 miles difference

    of course i am only speculating on when the car will run out of gas with the gas light on, but im pretty sure the manual says there is like 2.3 gallons or something like that left in the tank when the light comes on. either way the numbers to me are too small and too close to say that the car is running lean. Technically is it? yes, but its not anywhere near the danger zone.

    just my 2cents

    btw i dont have a blow off valve, and dont want one
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  15. #5009
    Registered User scooby-x's Avatar
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    I love my HKS SSQV
    04 Java Black Pearl - Sleek Eye

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    Quote Originally Posted by GOD The Almighty
    Patrick, you are a complete accident

  16. #5010
    Registered User hellafastWRX's Avatar
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    Quote Originally Posted by zapman
    did you try adjusting the spring pressure? i have a feeling i will be swapping mine off when i get home too.
    The day before Itook the bov off I took the spring and stretched it and put it back in. It seemed to solve the problem. My tuner said that the turboxs spring weakens after a while. I just took it off so I wouldent get any more idle problems this winter. I think ill put it back on in about a month when it warms up.
    --Chris
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    04 WRX wagon - 304whp Mods - SOLD
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