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  1. #51
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    Click here to enlarge Originally Posted by jpsimon Click here to enlarge
    I'm probably in the minority on this forum, but factoring in the cost of the headwork on top of the RB's, I'd much rather just get a single. Either way these results are very nice. When are you getting the upgraded intake pipes?

    i would bet you would change your mind if you drove dzens and a single back to back for a full day each
    09 6AT 335i Coupe M-Sport - SOLD
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  2. #52
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    Awesome results. Any more info on the inlet pipes? Please tell me you will sell these!

  3. #53
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    Click here to enlargeClick here to enlargeClick here to enlarge great work Dzenno!
    [SIGPIC][/SIGPIC]

  4. #54
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    Click here to enlarge Originally Posted by ChuckD05 Click here to enlarge
    i would bet you would change your mind if you drove dzens and a single back to back for a full day each
    Have you driven dzenno's car and a single turbo (with the medium or larger turbo) n54 back to back for a full day each? I take nothing away from dzenno, his car is coming together nicely. But I would personally much rather have a single setup that is capable of much more power up top. But that's just me.

    My intentions were not to turn this into a twin vs single debate again. So on this note i digress. Let's keep it on topic.
    Last edited by jpsimon; 11-13-2012 at 05:36 PM.
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  5. #55
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    Congrats with the record Dzenno , great results.

    I'm interested in how much hp gain was made with the head.
    Have these boost numbers been made before on a stock head RB car?

  6. #56
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    Click here to enlarge Originally Posted by funkmobster Click here to enlarge
    Congrats with the record Dzenno , great results.

    I'm interested in how much hp gain was made with the head.
    Have these boost numbers been made before on a stock head RB car?
    That’s a good question, and I believe DZ on the stock head experimented with around 70% DC on the dyno… he mentioned this before I think. If this is true it shows gains (considerable) in the mid-range over the stock head. It would be great to match the datalogs (mainly timing) on the different hardware.

    DZ, you can manipulate the boost numbers in the datalog by correlating MAP to 3.5bar/5v and it would be very accurate. send them to me and I'll do it Click here to enlarge

  7. #57
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    Would you think the vac head flows as good as the head you are currently running? Besides the bigger exhaust valves

  8. #58
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    There are no results with the vac head, it hasnt been installed on any n54 yet to my knowledge. They also didn't upgrade exhaust valves either and flow numbers were lower back then. Things change though and demand drives product development so I wouldnt be surprised to see a number of head solutions come to life in the coming months
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  9. #59
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    I want head . . . work.
    2010 e92 M3 Jet Black | DCT | ESS Tuned | Akrapovic Slip-on | Challenge X-pipe | AFE Intake | 18" Volk TE37SL | KW V3 Coilovers | RPI Scoops | Under Drive Pulley

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  10. #60
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    This is great, nice work DZ. I can only imagine how good that tq feels, wow the thing must jump when you get on it!
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    2 out of 2 members liked this post. Reputation: Yes | No
    Click here to enlarge Originally Posted by jpsimon Click here to enlarge
    Have you driven dzenno's car and a single turbo (with the medium or larger turbo) n54 back to back for a full day each? I take nothing away from dzenno, his car is coming together nicely. But I would personally much rather have a single setup that is capable of much more power up top. But that's just me.

    My intentions were not to turn this into a twin vs single debate again. So on this note i digress. Let's keep it on topic.

    I normally would be with you, but...if 631wtq can last on his car without a rod bending or head lifting after significant beating, well...631wtq. C'mon. Let me say it again...631wtq. That's a ~130wtq gain over what most maxed out pump+meth RB setups (or even stock setups for that matter) make. On stock headers/turbine housings. And on stock intake pipes. From $#@!ing headwork. Which will CERTAINLY become less expensive as more people explore this option. The biggest thing I want to see, frankly...is if 631-670wtq (assuming anywhere from a 0-40wtq gain from intake pipes and cleaning up the tune) is able to hold together on this engine and other engines, then the N54 will legitimately have a claim to something that the VR38DETT simply can't...namely, the ability to hold over 600wtq on a stock bottom end. And if Dzenan is exploring what I would in his situation besides the intake pipes, namely doing an EWG conversion a la OG DSMs, he should be able to make that TQ curve a whole lot flatter from it's 631 peak. Which will mean serious WHP numbers, and TQ that will embarrass some pretty big cars. And will make the scene for some GTXes quite serious. Everyone should brace oneself...n54 development is taking off...
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    What are the full specs of your mods?

  13. #63
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    TORQUE FTW!Click here to enlarge
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  14. #64
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    Click here to enlarge Originally Posted by nafoo Click here to enlarge
    I want head . . . work.
    That's what I told the last girl I was dating. We are no longer dating.

  15. #65
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    Click here to enlarge Originally Posted by DefactoM6 Click here to enlarge
    namely doing an EWG conversion a la OG DSMs
    Thanks @DefactoM6 . Can you expand on this comment a bit with respect to the N54?

    About torque, pulling 0.9G on the vbox past 100km/hr tonight is....leaves you a bit breathless hahahha
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  16. #66
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    Click here to enlarge Originally Posted by jpsimon Click here to enlarge
    I'm probably in the minority on this forum, but factoring in the cost of the headwork on top of the RB's, I'd much rather just get a single. Either way these results are very nice. When are you getting the upgraded intake pipes?
    jp,
    I appreciate your point. I think the point dzenno has made is that there is much power to be made via better flow via porting in the cylinder head. In the end, everyone in the community benefits from this sort of testing. Singles or duals issue is irrelevant really-it's more about pushing the platform and learning from it.

  17. #67
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    How big of a difference did the headwork make?

  18. #68
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    To the guy saying he would rather get a single than do headwork on top, it depends on your goals. If it was me I'd do headwork with either turbo setup.

  19. #69
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    Click here to enlarge Originally Posted by eric84405 Click here to enlarge
    jp,
    I appreciate your point. I think the point dzenno has made is that there is much power to be made via better flow via porting in the cylinder head. In the end, everyone in the community benefits from this sort of testing. Singles or duals issue is irrelevant really-it's more about pushing the platform and learning from it.
    Yes i think my post(s) were taken the wrong way. I appreciate what he's discovered on the head front for sure. I'd love to see the same head work done on a single turbo car
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  20. #70
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    To the guy saying he would rather get a single than do headwork on top, it depends on your goals. If it was me I'd do headwork with either turbo setup.
    +1 if it works do it all. Click here to enlarge
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  21. #71
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    If this motor stays together I will be one happy man. This speaks volumes for the strength of the n54, especially making that torque down low where cylinder pressures are higher.

  22. #72
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    Oh God here come the 2JZ comments again.

  23. #73
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    @dzenno@ProTUNING Freaks once again full specs rundown please.

  24. #74
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    Oh God here come the 2JZ comments again.
    Not quite there yet lol

  25. #75
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    nice job dzenno !! curious to see if that clutch holds ...

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