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This is a discussion on a different way to get rid of boost lag? within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; Originally Posted by jeremydingeman damn wrx650 beat me to it. Lol. I wondered why nobody had said anything about it. ...

  1. #16
    Registered User wrx650's Avatar
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    a different way to get rid of boost lag?

    Quote Originally Posted by jeremydingeman View Post
    damn wrx650 beat me to it.
    Lol. I wondered why nobody had said anything about it.


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    Registered User jsBLwrx's Avatar
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    Re: a different way to get rid of boost lag?

    Another method of improving response or reducing the lag would be a twin turbo schema of the mighty mk4 supra's.....small turbo for the off idle spool and the 2nd, larger turbo for the remainder of the rpm range....
    Last edited by jsBLwrx; 01-30-2013 at 06:06 PM.

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    Registered User G-Sep's Avatar
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    Quote Originally Posted by jsBLwrx View Post
    Another method of improving response or reducing the lag would be a twin turbo schema of the mighty mk4 supra's.....small turbo for the off idle spool and the 2nd, larger turbo for the remainder of the rpm range....
    That would be bi-turbo I think. Twin turbo would imply turbos of the same size, which would both kick in at the same time, versus a bi-turbo setup with 2 different sizes. Not trying to be a jerk, just clarifying it up.

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    Registered User jsBLwrx's Avatar
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    Re: a different way to get rid of boost lag?

    Quote Originally Posted by G-Sep View Post
    That would be bi-turbo I think. Twin turbo would imply turbos of the same size, which would both kick in at the same time, versus a bi-turbo setup with 2 different sizes. Not trying to be a jerk, just clarifying it up.
    Cool. Thanks

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    Quote Originally Posted by wrx650 View Post
    Lol. I wondered why nobody had said anything about it.


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    Love Ronin's Lotus, I was about to post the same. Such a cool car, heard he's a HUGE **** though. Oh well.

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    Quote Originally Posted by EndlessSea View Post
    as a guy coming from the mustang world. i had an 05 GT before the wrx. i can tell you that they dont. they do use power to drive the pulley, as i am sure you already know. but not the nearly 20% that he is claiming
    Depends on the compressor/pulley used.
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    a different way to get rid of boost lag?

    Quote Originally Posted by mcdbrendan View Post
    Love Ronin's Lotus, I was about to post the same. Such a cool car, heard he's a HUGE **** though. Oh well.
    Yeah that car is nuts. I wish I could see it on the track and see some more "official" tests.


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    Registered User MainFrame's Avatar
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    I would just use two step anti lag.. if I were building a Subie with a big enough turbo that lag would be a serious issue. A compound charged system with supercharger/turbo just seems awefully inefficient to me. Plus I would imagine it's a nightmare to tune. The last thing I need is a more complicated boost system.

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    Administrator RayfieldsWRX's Avatar
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    My VF34 implementation added a little more lag than I was used to on the EJ20 in my old WRX. I implemented the driver mod, and simply learned to drive it in its powerband.
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    Quote Originally Posted by RayfieldsWRX View Post
    My VF34 implementation added a little more lag than I was used to on the EJ20 in my old WRX. I implemented the driver mod, and simply learned to drive it in its powerband.
    LOL, drive my 18G 2L....
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    Quote Originally Posted by zax View Post
    Depends on the compressor/pulley used.
    I wouldn't be surprised to see 20% on an old roots charger up top. It all depends on what you are going for via the compressor/pulley as zax has stated.
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    Administrator RayfieldsWRX's Avatar
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    Quote Originally Posted by zax View Post
    LOL, drive my 18G 2L....
    Yeah, I thought about you while I was typing that.
    I might find a 2.0/18G to be quite driveable, if well-tuned...never experienced that.
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    Re: a different way to get rid of boost lag?

    Quote Originally Posted by RayfieldsWRX View Post
    ...never experienced that.
    Neither have I

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    Quote Originally Posted by zax View Post
    LOL, drive my 18G 2L....
    Quote Originally Posted by zax View Post
    Neither have I
    Truth. Zax actually has a 17(ish)g
    Quote Originally Posted by Trainrex
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  16. #30
    zax
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    Quote Originally Posted by Heide264 View Post
    Truth. Zax actually has a 17(ish)g
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