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    • Updated photos showing CP-E (Custom Performance Engineering) N54 Twin Turbo upgrade kit progress - Yes, it's still coming

      Updates on this twin turbo upgrade for the N54 have not been posted in some time leading to some speculation that CP-E was no longer working on it. As a matter of fact, the last time anything was posted on it was in November of last year. That updated showed a mock-up of the manifolds and the turbos. Since then things have progressed to actually having the turbos and manifolds mounted on the motor with a mock up of the piping.


      So yes, this upgrade is still coming. The N54 turbo upgrade market continues to heat up and really the main thing it is missing with a single turbo option out (kind of, still being tweaked and no real info from the handful of customers who have it) is an option for upgraded larger twins. For now, the only twin upgrades have been to the stock turbos.

      There is no timeline of completion but it looks as if CP-E and Vargas Turbocharger Technology will have the main turbo upgrade options for larger twins on the N54. Expect debate on the forums to soon shift from which tune to get to which turbo upgrade to get. Let the single versus twin debate begin!







      This article was originally published in forum thread: Updated photos showing CP-E (Custom Performance Engineering) N54 Twin Turbo upgrade kit progress - Yes, it's still coming started by Sticky View original post
      Comments 144 Comments
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Karura Click here to enlarge
        You are right, and I know that we have members like Buraq that have managed to push the DCT without any problems, but at the same we should not neglect the stock dual clutch's torque capacity (6MT has a much greater tolerance), unless I am severely misinformed. To push it beyond FBO and get upgraded turbos, I'm sure it would still be amazing; however, it just makes so much more sense to upgrade the clutch too! No need to worry about clutch slipping or anything. Click here to enlarge
        Yes what I'm trying to tell you is the clutch discs can be upgraded.
      1. Karura's Avatar
        Karura -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Yes what I'm trying to tell you is the clutch discs can be upgraded.
        I was under the assumption that although there are companies releasing 335is/M3 DCT clutch packs, you would have to upgrade the software to get it working optimally, and I'm not sure if anyone has experimented with it yet.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Karura Click here to enlarge
        I was under the assumption that although there are companies releasing 335is/M3 DCT clutch packs, you would have to upgrade the software to get it working optimally, and I'm not sure if anyone has experimented with it yet.
        I've experimented with it. The software really only controls the line pressure. You want to make sure you have enough clamping force for the upgraded discs. It's partially hardware and software.

        If you want to change shift points, launch control rpm, and stuff that like that's a whole different story.
      1. Sered's Avatar
        Sered -
        Click here to enlarge Originally Posted by Itsbrokeagain Click here to enlarge
        Some log manifolds can flow just as well as tubular ones...as evidenced by SteedSpeed and HPFs cast log setup for the E46 M3.

        For the packaging constraints, i think its a great setup. CPe I think is one of very few (if not the only one) companies that has a Foundry in which to cast parts...AMS's bellmouth downpipes, intercooler endtanks, and various turbo parts for the EVo and GTR are cast by CPe...
        I'm going to have to disagree with you there. 'Some log manifolds can flow just as well as tubular ones' might be true if you have a great flowing log and a terrible flowing tubular; but that's not what we're talking about here. I'm talking a high-quality tubular manifold; I'd prefer that due to the immense airflow gains. These log manifolds choke up the exhaust side of an already poor-flowing head.

        You can't compare the S54 to the N54 at all, sorry. The S54's head flows incredible numbers and can max out a T66 on pump gas at low boost.
      1. Tony@VargasTurboTech's Avatar
        Tony@VargasTurboTech -
        Click here to enlarge Originally Posted by Sered Click here to enlarge
        I'm going to have to disagree with you there. 'Some log manifolds can flow just as well as tubular ones' might be true if you have a great flowing log and a terrible flowing tubular; but that's not what we're talking about here. I'm talking a high-quality tubular manifold; I'd prefer that due to the immense airflow gains. These log manifolds choke up the exhaust side of an already poor-flowing head.

        You can't compare the S54 to the N54 at all, sorry. The S54's head flows incredible numbers and can max out a T66 on pump gas at low boost.
        Tell that to people making 1000HP plus on a nicely designed log style across many platforms. They are everywhere. Everyone has their opinions.
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Click here to enlarge Originally Posted by VargasTurboTech Click here to enlarge
        Tell that to people making 1000HP plus on a nicely designed log style across many platforms. They are everywhere. Everyone has their opinions.
        For sure. People need to realize that there's absolutely nothing wrong with log style manifolds on FI setups. What I'd worry more about (not in this case but more in general) is what turbo you pick for your application, tuning and wastegate size as well as placement. If you get these three sorted, log style or tubular, it should be very close numbers wise in the end. Its just splitting hairs really. Just my 2c having seen a number of aftermarket setups in action locally as well as online
      1. Irishace's Avatar
        Irishace -
        Looking forward to the winter updates for the N54. Finally some very interesting TT developments. I so want back into an N54 with a non-hybrid upgraded twin setup.
      1. Terry@BMS's Avatar
        Terry@BMS -
        Click here to enlarge Originally Posted by VargasTurboTech Click here to enlarge
        Tell that to people making 1000HP plus on a nicely designed log style across many platforms. They are everywhere. Everyone has their opinions.
        I have to say I've used log manifolds in the past and they work fine. Sometimes better than tubular as they retain heat really well despite the poorer flow characteristics. If someone made a simple log manifold with a 58mm internal wastegated turbo and the setup was priced right I'd be all over that.
      1. Tony@VargasTurboTech's Avatar
        Tony@VargasTurboTech -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        I have to say I've used log manifolds in the past and they work fine. Sometimes better than tubular as they retain heat really well despite the poorer flow characteristics. If someone made a simple log manifold with a 58mm internal wastegated turbo and the setup was priced right I'd be all over that.
        Its coming Terry. I should have my manifolds finished tomorrow, and will begin charge piping and lines this weekend. I am really excited to see how this system works.
      1. Eleventeen's Avatar
        Eleventeen -
        Click here to enlarge Originally Posted by Turkeybaster115 Click here to enlarge
        Since, I'm only at the race course, TWINS all the way! This should pave the way for the first 1,000HP N54! Are we the new supra?
        No way man! We're more like the new GT-R, except we were out first, so we are the old GT-R and the actual GT-R is like the new N54, which is kind of like the old 328i which was made by the Germans who added Japanese turbos made by Mitsubishi (who made the Zero that shot down Mustangs), so I prefer to just call it the Axis Powers of WWII. We drive pure evil... evil gets good gas milage.
      1. Legionofboom's Avatar
        Legionofboom -
        Click here to enlarge Originally Posted by Eleventeen Click here to enlarge
        No way man! We're more like the new GT-R, except we were out first, so we are the old GT-R and the actual GT-R is like the new N54, which is kind of like the old 328i which was made by the Germans who added Japanese turbos made by Mitsubishi (who made the Zero that shot down Mustangs), so I prefer to just call it the Axis Powers of WWII. We drive pure evil... evil gets good gas milage.
        hmm fact check please...
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by dzenno@ProTUNING Freaks Click here to enlarge
        For sure. People need to realize that there's absolutely nothing wrong with log style manifolds on FI setups. What I'd worry more about (not in this case but more in general) is what turbo you pick for your application, tuning and wastegate size as well as placement. If you get these three sorted, log style or tubular, it should be very close numbers wise in the end. Its just splitting hairs really. Just my 2c having seen a number of aftermarket setups in action locally as well as online
        But he's right that if you want the best possible airflow you will look into a tubular setup.
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Honestly a lot of people would laugh if they saw some really nice tubulars vs really dead simple log manis perform nearly if not equal in the end. Properly designed log style can be just as functional as a tubular from what i gathered locally from the expert race shops but if you'll split hairs then yes the ultimate in flow if both were maximized design wise without considering any fitment issues/constraints (i.e. unrealistic) then a tubular will come out on top.
      1. Blaizon's Avatar
        Blaizon -
        Click here to enlarge Originally Posted by dzenno@ProTUNING Freaks Click here to enlarge
        Honestly a lot of people would laugh if they saw some really nice tubulars and really dead simple log manis perform nearly if not equal in the end. Properly designed log style can be just as functional as a tubular from what i gathered locally from the expert race shops but if you'll split hairs then yes the ultimate in flow if both were maximized design wise without considering any fitment issues/constraints (i.e. unrealistic) then a tubular will come out on top.
        I'd go log manifold all day due to simplicity.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by dzenno@ProTUNING Freaks Click here to enlarge
        Honestly a lot of people would laugh if they saw some really nice tubulars vs really dead simple log manis perform nearly if not equal in the end. Properly designed log style can be just as functional as a tubular from what i gathered locally from the expert race shops but if you'll split hairs then yes the ultimate in flow if both were maximized design wise without considering any fitment issues/constraints (i.e. unrealistic) then a tubular will come out on top.
        Functional and optimal are two different things.
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Functional and optimal are two different things.
        That is true but saying it like that makes it sound like one has ultimate superiority that matters a lot in the real world and that is what really confuses people out there. Really, the place it'll matter THE most is in the price in the end
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by dzenno@ProTUNING Freaks Click here to enlarge
        That is true but saying it like that makes it sound like one has ultimate superiority that matters a lot in the real world and that is what really confuses people out there. Really, the place it'll matter THE most is in the price in the end
        One design does have ultimate superiority the question comes down to the cost and complexity. If a log can do what you need at a lower price point it is more practical. It isn't better though.
      1. Square&Level's Avatar
        Square&Level -
        Great Log vs. Tubular comparisons across multiple platforms found here:http://www.full-race.com/articles/
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        One design does have ultimate superiority the question comes down to the cost and complexity. If a log can do what you need at a lower price point it is more practical. It isn't better though.
        Never said its "better", I said in a lot of cases it is JUST as functional and performant while at the same time ALWAYS being simpler and cheaper.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Square&Level Click here to enlarge
        Great Log vs. Tubular comparisons across multiple platforms found here:http://www.full-race.com/articles/
        Tons to read there... I'll leave it for someone else.