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Pre Throttle Boost Source IC vs. Turbo Housing

Posted by cait sith, Apr 21, 2013

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  1. cait sith

    cait sith Proven Member

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    Joined Nov 22, 2002
    Brooklyn, New York
    My EVC5 needs a pre throttle boost source, and my FP3052 isn't drilled/tapped for one, which has caused some uh, relatively interesting throttle response when T'd off the BOV line (Aka don't do it).

    I was looking around and some people say that doing the j-pipe for a boost source is OK.

    I'd rather NOT have to drop the turbo or drill/tap the turbo while it's mounted, but if it's really that much better than the intercooler pipe (pre I/C), I'll do it, but I don't think it's that great?

    I'm almost ready to go buy another Hallman. Ugh.
     
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  2. Gstclipse69

    Gstclipse69 Proven Member

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    Joined Jun 30, 2006
    Columbia, South Carolina
    I think tapping the j pipe right after the turbo would be fine. Much easier than dropping the turbo and having to tap the compressor housing.
     

    603  0

    1999 Mitsubishi Eclipse GSX
    · 2G DSM
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  3. cait sith

    cait sith Proven Member

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    Joined Nov 22, 2002
    Brooklyn, New York
    Thanks, I think I'm going to grab a cast elbow and put the port in there. I can always take it out if need be as well.

    Cheers!
     
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  4. crash89

    crash89 Proven Member

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    Joined Mar 5, 2008
    Janesville, Wisconsin
    You dont have to really take the turbo off, just the compressor housing. Usually they have a big C clamp or a few bolts. But yes as close to the compressor cover as you can get would be better.
     

    4K  4

    1999 Mitsubishi Eclipse Spyder GST
    awd · manual · 2G DSM

    3K  10

    1999 Mitsubishi Eclipse Spyder GST
    11.043 @ 125.92 · 2G DSM
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  5. cait sith

    cait sith Proven Member

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    Joined Nov 22, 2002
    Brooklyn, New York
    Speaking of which, what's the diameter of the outlet on a 3052, is it 2.5"? I don't have access to my car at the current moment.
     
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  6. Moonlight GSX

    Moonlight GSX Proven Member

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    Joined Nov 16, 2010
    Edmond, Oklahoma
    The diamter is a 2" out, generally you're larger sized turbos (T3/T4 type) will run the 2.5" out with a 4" in.
     

    Street Build 2K  0

    1995 Mitsubishi Eclipse GSX
    manual · 2G DSM

    Street Build 1K  0

    1996 Mitsubishi Eclipse GSX
    manual · 2G DSM
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