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Thread: How-To: VTCS Removal and Porting

  1. #46
    nice shoes...

    2001 mazda protege5

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    wish someone had a before and after dyno... I think it would be a good idea for those who plan on offering this as a service to get dyno sheets to help aid in getting some job bids... Just a thought. But I wonder also if there may be a chance that the throttle body may could use a port and polish on the inside of it. Anyone got any info on this>????

  2. #47
    Finnaly running 13.5's Da 6's Avatar

    2013 BGM Chevy Cruze ECO, 2005 SWP Subaru Legacy GT

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    I ment removal of vtcs and yes electronic welded plastic vilm intake
    2013 Black Granite Metallic Chevy Cruze Eco 6MT (DD)
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  3. #48
    www.Protege5Online.com Skurge's Avatar

    18' STI/87 RX-7/88 323 GTX

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    plastic???? wow...I wouldn't think you could make it out of plastic
    2018 STi
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  4. #49
    _.-._.-._.-._.-._.-._ peepsalot's Avatar
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    Yeah, I don't believe it either! I demand pics of this suppos'ed plastic manifold! Heh-heh.
    yep

  5. #50
    Finnaly running 13.5's Da 6's Avatar

    2013 BGM Chevy Cruze ECO, 2005 SWP Subaru Legacy GT

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    wha? yeah plastic...many cars have plastic intakes....it withstands heat from the radiator but not a dremel I'll try and find picts of the 2.3 MZR VTCS VILM intake manifold.

    p.s. the 2.3 in the 3s has a plastic valve cover...
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  6. #51
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    MSP #654

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    The Camaros, Trans Ams, (LS1 engine) and Corvettes (LS6 engine) have had plastic intake manifolds. The most popular aftermarket one is also plastic and gives an extra 20hp and 15ft/lbs. (I have a lot of domestic friends)


  7. #52
    Carbon Fiber Addict Reffoxel's Avatar
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    Even the Crown Vic has a plastic intake manifold ... and it's complete fertilizer. The bottom has a tendency to blowout and that's without any boost.
    2003 Sunburst Yellow Protege 5
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  8. #53
    Finnaly running 13.5's Da 6's Avatar

    2013 BGM Chevy Cruze ECO, 2005 SWP Subaru Legacy GT

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    V6 6 has plastic one with the words FoMoCo in it
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  9. #54
    Got Boost? trbomp5's Avatar

    2002 MP5t

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    subscribing

  10. #55
    Finnaly running 13.5's Da 6's Avatar

    2013 BGM Chevy Cruze ECO, 2005 SWP Subaru Legacy GT

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    Quote Originally Posted by trbomp5
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    yeah same thing...kinda sorta
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  11. #56
    Registered Member Nutari's Avatar
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    WTB: Intake manifold for p5

    Suscribing and posting up my WTB announcment..

    ^_^

  12. #57
    _.-._.-._.-._.-._.-._ peepsalot's Avatar
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    Ok guys, I'm in a doozy of a pickle here. I have removed vtcs and ported a spare intake manifold, and I'm trying to swap them out now. I removed everything needed to take the intake manifold off, except for this damn exhaust gas pipe. The one that with the 25mm nut on it. I am trying to use a crescent wrench using all my might, but it refuses to budge. There is no room for a breaker bar, and i have already round off some edges. I tried a little wd-409 on it, but it ain't helping. I can't even get to it very well becuase of all the damn coolant hoses right next to it. What the hell am I supposed to do.

    Also, is it really necessary to remove the egr valve to take the manifold off? Seems it would be easier to remove after the manifold is off of the engine.
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  13. #58
    Thread Killer eting_pro5's Avatar

    '03 Pro5

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    I'm a lil' confused on VTCS. Once the car is warmed up, is it always off? or is it when the car is warmed up and over 3K rpm that it shuts off?

  14. #59
    That Guy flat_black's Avatar


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    You can unbolt the upper manifold from the lower, and just swap that... That isn't TOO hard, but sometimes it's a bitch to reach that EGR valve; You have to get it from underneath, if you do, since it's such a pain to get to!

    Eting: VTCS is always off once the car is warmed up. At 3000 and up WHEN COLD, it closes more to promote more tumble.
    - Eddie
    ================
    2002 Mazda Protege5
    2003 Suzuki SV650
    2004 Subaru WRX

  15. #60
    Thread Killer eting_pro5's Avatar

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    Thanks flat_black, just one more question....

    so basically disabling the VTCS isn't giving anyone any gains (except maybe before it's warmed up). People are getting their gains from porting, right???

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