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Thread: truning up the boost?

  1. #1

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    truning up the boost?

    How do you trun up the boost on the legnum's?
    I'm running 12psi at the moment, thinking of putting it up to 13 or 14.
    Or is it best to buy a boost controller?
    I have already got a reflashed ecu in the car.
    1997 PFL Legnum VR-4 "Super Replica", White, Manual
    2001 FL Galant VR-4, Type V, Black, Manual

    Past Owned
    1997 PFL Legnum ST-R, Pearl White, Tiptronic
    1998 PFL Legnum Super VR-4, Silver, Tiptronic
    1998 PFL Legnum Super VR-4, Silver, Tiptronic
    1998 FL Legnum VR-4, Silver, Tiptronic
    1999 FL Legnum VR-4, Silver, Tiptronic

  2. #2
    Subaru ETA's Avatar

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    Do you have a larger exhaust and decat? That will give you a couple of PSI. Other then that, a boost controller
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  3. #3

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    It only got 3" catback exhaust but need to replace the muffler on it.

  4. #4
    Chris.W's Avatar

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    Boost controler all the way. Personaly I favour the electronic type as I find they have a finer amount of adjustment.
    '96 Galant VR4 manual
    Uprated intercooler
    Siebon Carbon bonnet
    Carbon roof
    Custom 3" straight through Exhaust
    Tein Super Wagon coilovers
    BBS alloys
    Mintex 1155's
    Hell braided break hoses
    Gizzmo IBC
    DE-restricted
    Dump vlv.
    Td04's
    Custom exhaust manifolds
    Custom 2.5 - 3" downpipes
    Custom intake pipework
    Twin filter set-up
    Vipec ECU
    SARD FPR
    RC Racing 550cc injectors
    Modified fuel rail
    HRC HR342 fuel pump (340lph)
    Relocated battery
    A/C removed
    Slim push fans x2

    '97 Legnum vr4
    Evo Enki's
    Custom cat back exhaust
    HKS mushroom filter
    De-restricted
    Brembo's on front
    Now breaking for spares

    More to come, eventually.

  5. #5
    Kenneth's Avatar

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    You could always do another flash on the ECU.

    If you have the little restrictor pill in the boost control solenoid, you can remove that for a couple more PSI too.

    Personally, I have a 3port solenoid driven by the ECU (which of course is flashed). I have multiple boost profiles switchable, but in the end I only use the top one and just regulate boost with my foot...

  6. #6
    Subaru ETA's Avatar

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    Get a decat, then look at boost controller IMO

  7. #7

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    Cheers guys, will look at a decat and reflash..

    Who the best to see about a reflash? Any idea of the cost?

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