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  1. #1
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    If you could design your own ST kit for the N54...

    What Turbo would you start with?

    Presion 6x66 series?
    -6466 is high on my list

    Borg Warner?
    -they make my head hurt but apparently are the jam beezy

    Other?

    FAQ/comments sure to come to which i wont respond:
    -Single is a waste of time or money at this point, dont bother.
    -Yea thats cool bro i dont care lol
    -Manifolds are unproven.
    -Cool, nothings impossible
    -No one can properly tune it.
    -Whatevs

    i.e.
    Im just looking for Turbo gurus to chime in with suggestions for best overall starting point for spool up and power balance and leave room for the future when Trans issues are sorted and motor internal work is viable/proven

    ThankS!
    - Proven Power Tampa built 6466 ST -
    - N54 6AT WR 711whp 637wtq-
    -N54 WR 1/4mile trap: 133.57mph- -

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    1 out of 1 members liked this post. Reputation: Yes | No
    Borg Warner. Yes, they do take up slightly more space, but for the technology you get, it's worth it, and if you use an EFR, it actually reduces quite a bit of complexity due to the IWG, so you don't have to deal with fitting and plumbing an EWG, which is amazing. For a street car, EFR8374 with the 0.91 housing IWG would be great, if you're looking for something with more guts, the 9180 would be awesome, and would still likely prove to be quite effective on the street. If you're having trouble obtaining the EFRs/keeping the budget down (though after the EWG, the amount you save isn't that much)/want something more conventional, the S300SX FMW/S400SX FMWs are rather similar to the 8374 and 9180 respectively, as they use pretty much the same awesome FMW compressor. If you ask me...do it once, do it right, get a 9180.
    Click here to enlarge

  3. #3
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    So tempted to take this one off track... argh, you guys have fun.

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    So tempted to take this one off track... argh, you guys have fun.
    Click here to enlarge
    thats ok This is real Click here to enlarge
    - Proven Power Tampa built 6466 ST -
    - N54 6AT WR 711whp 637wtq-
    -N54 WR 1/4mile trap: 133.57mph- -

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    Click here to enlarge Originally Posted by Ak335i Click here to enlarge
    Click here to enlarge
    thats ok This is real Click here to enlarge
    Ha ha ha, I'll let it go.

  6. #6
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    just do a b16 swap
    09 6AT 335i Coupe M-Sport - SOLD
    Current - 16 Jeep Wrangler - Few Mods
    Looking for a n54 project e90/e82

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    Twin scroll for sure, BW EFRs are cool, but you might have trouble fitting it Click here to enlarge A nice TT Precision or BW, quickspool valve etc.

    I saw CPE relocating the engine mount for more clearance on their TT kit.

    I'd be very interested in figuring out why so many of these projects die Click here to enlarge Maybe someone who's gotten it to work like AR Design can chime in on some of the difficulties faced by running a single turbo. Or people who haven't gotten it to work, like unfor and HPF can chime in on what they did that didn't work. If someone has facts or details around those it would be helpful as well.
    LEMANS BLUE M-TECH E92->PROCEDE REV3::ETS 7" FMIC::RACELAND DPS::WAVETRAC DIFF::DEFIV DIFF LOCKDOWN::DEFIV OCC::DEFIV INTAKE::RB PCV

  8. #8
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    Click here to enlarge Originally Posted by uniter Click here to enlarge
    Twin scroll for sure, BW EFRs are cool, but you might have trouble fitting it Click here to enlarge A nice TT Precision or BW, quickspool valve etc.

    I saw CPE relocating the engine mount for more clearance on their TT kit.

    I'd be very interested in figuring out why so many of these projects die Click here to enlarge Maybe someone who's gotten it to work like AR Design can chime in on some of the difficulties faced by running a single turbo. Or people who haven't gotten it to work, like unfor and HPF can chime in on what they did that didn't work. If someone has facts or details around those it would be helpful as well.
    @uniter
    its happening Click here to enlarge
    - Proven Power Tampa built 6466 ST -
    - N54 6AT WR 711whp 637wtq-
    -N54 WR 1/4mile trap: 133.57mph- -

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    2 out of 2 members liked this post. Reputation: Yes | No
    I heard the turbo spool...
    LEMANS BLUE M-TECH E92->PROCEDE REV3::ETS 7" FMIC::RACELAND DPS::WAVETRAC DIFF::DEFIV DIFF LOCKDOWN::DEFIV OCC::DEFIV INTAKE::RB PCV

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    Click here to enlarge Originally Posted by uniter Click here to enlarge
    That sounded an awful lot like a precision 6466 Click here to enlarge
    - Proven Power Tampa built 6466 ST -
    - N54 6AT WR 711whp 637wtq-
    -N54 WR 1/4mile trap: 133.57mph- -

  11. #11
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    Local shop just started putting these on SRT8 Jeeps, Should do the trick.
    Click here to enlarge
    2011 E90 M3 \ Melbourne Rot Metallic

    Click here to enlarge

  12. #12
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    not sure what the obsession is on here for precision turbos. They do not last like a Garrett or BW from what i understand. Forced Performance makes modifications to Garrett turbos that are just plain sick. The HTA 3586r turbo i have is a BB turbo with a billet wheel and spools fairly fast for a 750-800HP turbo. With that being said I would go with a BW twin scroll EFR turbo if i was starting from scratch. I would not own a precision turbo. Comp would be third on my list before precision turbos.
    2011 335is DCT, collecting parts....


  13. #13
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    I would say twin scroll and optimally sized to retain down low characteristics and doesn't shift the curve incredibly to the right.
    2007 335i (100% stock with mods)

    N54 is not a German 2JZ lol

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    Came down to Borg warner 9180 and Precision 6466(sorry BigDenno) lol

    Im in love with the BW, but Borg's physical size is a another challenge.

    The 6466 spools faster than other turbos in that size/power range turbos

    For an Auto application faster spool is more important to keep more under the curve as i wont be utilizing the 6500+ rpm band
    - Proven Power Tampa built 6466 ST -
    - N54 6AT WR 711whp 637wtq-
    -N54 WR 1/4mile trap: 133.57mph- -

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    If i can recommend anything, is look at incorporating http://www.suprastore.com/spquspva.html into your system. Should you choose a slightly larger turbo, it should help with the curve and maintaining the low end grunt you have come to enjoy Click here to enlarge

  16. #16
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    Click here to enlarge Originally Posted by Aced16 Click here to enlarge
    If i can recommend anything, is look at incorporating http://www.suprastore.com/spquspva.html into your system. Should you choose a slightly larger turbo, it should help with the curve and maintaining the low end grunt you have come to enjoy Click here to enlarge

    good call! i was just looking into this apparatus Click here to enlarge
    - Proven Power Tampa built 6466 ST -
    - N54 6AT WR 711whp 637wtq-
    -N54 WR 1/4mile trap: 133.57mph- -

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    Click here to enlarge
    I would like to see the graph after 5700 rpm in that shot. I think with the QSV, it will make less HP in higher RPM's as it reduces the flow of exhaust gas. Am i wrong?

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    Click here to enlarge Originally Posted by Sorena Click here to enlarge
    I would like to see the graph after 5700 rpm in that shot. I think with the QSV, it will make less HP in higher RPM's as it reduces the flow of exhaust gas. Am i wrong?
    Yes.

    The QSV 'should be' over sized to accommodate for its size in the tube. However I would readily sacrifice a negligible amount of power 'up top' for that amazing spool improvement.

    See the FAQ Here:
    http://www.supraforums.com/forum/sho...uctions-Thread

    Will the QSV impede the top end flow and lose peak HP?
    NO!!! We purposely oversized the QSV's butterfly valve to be sure that there are NO top end losses even in the large T6 applications.
    LEMANS BLUE M-TECH E92->PROCEDE REV3::ETS 7" FMIC::RACELAND DPS::WAVETRAC DIFF::DEFIV DIFF LOCKDOWN::DEFIV OCC::DEFIV INTAKE::RB PCV

  19. #19
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    Click here to enlarge Originally Posted by lulz_m3 Click here to enlarge
    Local shop just started putting these on SRT8 Jeeps, Should do the trick.
    Click here to enlarge
    OMG.

    Tell us more good sir...

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    1 out of 1 members liked this post. Reputation: Yes | No
    Click here to enlarge Originally Posted by bigdnno98 Click here to enlarge
    not sure what the obsession is on here for precision turbos. They do not last like a Garrett or BW from what i understand. Forced Performance makes modifications to Garrett turbos that are just plain sick. The HTA 3586r turbo i have is a BB turbo with a billet wheel and spools fairly fast for a 750-800HP turbo. With that being said I would go with a BW twin scroll EFR turbo if i was starting from scratch. I would not own a precision turbo. Comp would be third on my list before precision turbos.
    It's just a lot of big HP builds use Precision turbos.

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    If you're going to bother with a butterfly valve, I'd do it on twin turbos. You would get much more dynamic range. Blocking flow from 3 cylinders doesn't seem like a good idea at all.

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    1 out of 1 members liked this post. Reputation: Yes | No
    Just read more, and as I thought, you need an undivided exhaust manifold. The whole point of a twin scroll is to run a divided manifold and harness the combined pulses. Sort of defeats the point of going twin scroll to begin with, but it may be a slightly cheaper albeit less functional, alternative to going sequential twin turbo.

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    Click here to enlarge Originally Posted by rudypoochris Click here to enlarge
    Just read more, and as I thought, you need an undivided exhaust manifold. The whole point of a twin scroll is to run a divided manifold and harness the combined pulses. Sort of defeats the point of going twin scroll to begin with, but it may be a slightly cheaper albeit less functional, alternative to going sequential twin turbo.
    People sit on both sides of the fence on this topic. A pulse matched tubular equal length engineered runner bling bling manifold vs a well designed undivided with a quick-spool hasn't been tested back to back (at least not publicly.) I don't think that running a quickspool defeats the purpose of running twin scroll, it just uses it differently to achieve a dramatically faster spool.

    I'm definitely in for back-to-back testing to see what works best.
    LEMANS BLUE M-TECH E92->PROCEDE REV3::ETS 7" FMIC::RACELAND DPS::WAVETRAC DIFF::DEFIV DIFF LOCKDOWN::DEFIV OCC::DEFIV INTAKE::RB PCV

  24. #24
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    OMG.

    Tell us more good sir...
    I'll make a seperate post this evening, i went to cars n coffee last saturday and they had 3 in attendance, two with the basketball sized turbo you see there, and another with a 76mm i believe. Combined horsepower for the 3 was over 3k, lol.
    2011 E90 M3 \ Melbourne Rot Metallic

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    Click here to enlarge Originally Posted by uniter Click here to enlarge
    People sit on both sides of the fence on this topic. A pulse matched tubular equal length engineered runner bling bling manifold vs a well designed undivided with a quick-spool hasn't been tested back to back (at least not publicly.) I don't think that running a quickspool defeats the purpose of running twin scroll, it just uses it differently to achieve a dramatically faster spool.

    I'm definitely in for back-to-back testing to see what works best.
    I am pretty sure a quickspool undivided twin scroll would work better than a twin scroll divided with no quick spool. It begs the question though, why not just get twin turbos and do the same thing? That will be even better....

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