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    • S55 Breakthrough - The first true twin turbo upgrade for the BMW F80 M3 & F82 M4 S55 motor from Kratos, 1000+ horsepower capable

      You might be saying to yourself, hold on, there are turbo upgrades out there for the BMW S55 engine. That is true but the upgrades are hybrid units which means they utilize the factory BMW S55 turbo housings. This upgrade from Kratos is a true full twin turbo upgrade.


      This turbo upgrade was hiding in the Motul booth at SEMA and it seems many people glossed over it as well as the implication for the platform.

      Currently, top S55's are pushing hybrids to the maximum. The truth that several tuners are not sharing is that the hybrids are pushed well out of their efficiency range to hit 7XX peak numbers. Some are even using nitrous to hit those figures.

      Pushing turbos out of their efficiency range may be fine for a glory pull or a couple passes but it is useless for someone on a roadcourse. Speaking of which, this upgrade has spent considerable time on the track for over a year on M4's that are raced professionally. You will not find any other turbo upgrade with that type of rigorous testing.

      There are some key points to focus on to truly understand the Kratos upgrade and how it differs:

      • No core exchange required. You do not need to send in your factory S55 turbochargers. Keep them, sell them, etc. There is no wait time required as the turbochargers are in stock. Order, receive. That simple.
      • Hybrid upgrades utilize stock journal bearing cartridges. The Kratos upgrade has a proprietary ball bearing design.
      • Stainless investment castings are used from the CHRA bearing housings to the manifolds as opposed to cheaper sand castings.
      • Inducer matched inlet piping for both turbochargers is included.

      If you are unfamiliar with the Kratos name do not worry as you will be hearing it a lot over the next few months. The brand will offer turbo upgrades engineered by ASR Engineering for a variety of platforms.

      This is just a teaser from SEMA but expect pricing information, dyno graphs, and further details to come shortly.

      The era of properly engineered true big twin upgrades for the S55 motor is finally here.














































      This article was originally published in forum thread: S55 Breakthrough - The first true twin turbo upgrade for the BMW F80 M3 & F82 M4 S55 motor from Kratos, 1000+ horsepower capable started by Sticky View original post
      Comments 45 Comments
      1. Eleventeen's Avatar
        Eleventeen -
        Will this void my warranty?

        Just kidding, I know it won't. Anyway, if these are truly 1,000 HP capable, then even the people looking for a lot of power on "pump gas" should be able to put down some really good numbers. I assume that 1,000 HP estimation is not WHP, but still...
      1. BPCMotorsports's Avatar
        BPCMotorsports -
        Seems nice, look forward to more information.
      1. Zel335's Avatar
        Zel335 -
        These guys stopped by my booth at SEMA, I'm really hoping they release a product for the N55. They said they got a lot of request and from the sounds of the product and what it can do it will be amazing. Just hope the price doesn't push that of a full EFR Build.
      1. 93siro's Avatar
        93siro -
        ASR Engineering? lol. Weren’t they full of $#@!?
      1. Sm3's Avatar
        Sm3 -
        Click here to enlarge Originally Posted by 93siro Click here to enlarge
        ASR Engineering? lol. Weren’t they full of $#@!?
        Wow!! I cannot believe he used the name ASR again after how he cheated so many people out of so much!! As smart of a crook he is I cannot believe hes dumb enough to use ASR again!
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Zel335 Click here to enlarge
        These guys stopped by my booth at SEMA, I'm really hoping they release a product for the N55. They said they got a lot of request and from the sounds of the product and what it can do it will be amazing. Just hope the price doesn't push that of a full EFR Build.
        What booth did you have?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by 93siro Click here to enlarge
        ASR Engineering? lol. Weren’t they full of $#@!?
        No. They did do two M5 builds that did not work out but those reasons are fairly complex and as to everything there are two sides to the story.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Sm3 Click here to enlarge
        Wow!! I cannot believe he used the name ASR again after how he cheated so many people out of so much!! As smart of a crook he is I cannot believe hes dumb enough to use ASR again!
        First of all, this is a Kratos kit. ASR did the engineering work.

        Secondly, you may notice that any outstanding issues were resolved including the one here with member George Smooth partially thanks to BimmerBoost as well as ASR reaching out and resolving it to everyone's mutual satisfaction.

        Let's focus on the turbo kit here and how it is far and away beyond what anyone else offers.
      1. 135Hoser's Avatar
        135Hoser -
        I'm in when I see a dyno graph on pump 93, then pump 93+Meth.

        I like the hybrid pure turbo stage 2's, but 6-700 whp on pump gas on a stock motor? yes please!
      1. Zel335's Avatar
        Zel335 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        What both did you have?
        I work for APR.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Zel335 Click here to enlarge
        I work for APR.
        Sweet gig.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by 135Hoser Click here to enlarge
        I'm in when I see a dyno graph on pump 93, then pump 93+Meth.

        I like the hybrid pure turbo stage 2's, but 6-700 whp on pump gas on a stock motor? yes please!
        Graphs to come Click here to enlarge
      1. richpike's Avatar
        richpike -
        Impressive. Is there a stable fix for the crank hub issue yet?

        -Rich
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by richpike Click here to enlarge
        Impressive. Is there a stable fix for the crank hub issue yet?

        -Rich
        So far the new Gintani solution as well as the Max PSI solutions are holding.
      1. Sales@KRATOS's Avatar
        Sales@KRATOS -
        Click here to enlarge Originally Posted by Eleventeen Click here to enlarge
        Will this void my warranty?

        Just kidding, I know it won't. Anyway, if these are truly 1,000 HP capable, then even the people looking for a lot of power on "pump gas" should be able to put down some really good numbers. I assume that 1,000 HP estimation is not WHP, but still...
        Pump gas figures will inherently be higher than hybrid turbos due to our increased A/R and re-engineered manifold design alone. Our standard forged billet option flows 51lbs/min and titanium option 55lbs/min. The 1000hp figure is based on the titanium option which is not only a larger wheel, but also a completely different and more aggressive design utilizing the increased tensile strength of the Ti6Al-4V titanium material.
      1. Zel335's Avatar
        Zel335 -
        Click here to enlarge Originally Posted by Sales@KRATOS Click here to enlarge
        Pump gas figures will inherently be higher than hybrid turbos due to our increased A/R and re-engineered manifold design alone. Our standard forged billet option flows 51lbs/min and titanium option 55lbs/min. The 1000hp figure is based on the titanium option which is not only a larger wheel, but also a completely different and more aggressive design utilizing the increased tensile strength of the Ti6Al-4V titanium material.
        Now we just need a N55 solution Click here to enlarge.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Sales@KRATOS Click here to enlarge
        Pump gas figures will inherently be higher than hybrid turbos due to our increased A/R and re-engineered manifold design alone. Our standard forged billet option flows 51lbs/min and titanium option 55lbs/min. The 1000hp figure is based on the titanium option which is not only a larger wheel, but also a completely different and more aggressive design utilizing the increased tensile strength of the Ti6Al-4V titanium material.
        Do we know what it will hit on pump gas at this time?
      1. Sales@KRATOS's Avatar
        Sales@KRATOS -
        Click here to enlarge Originally Posted by 135Hoser Click here to enlarge
        I'm in when I see a dyno graph on pump 93, then pump 93+Meth.

        I like the hybrid pure turbo stage 2's, but 6-700 whp on pump gas on a stock motor? yes please!
        Dyno graphs soon to come with 93 pump as well as 93 pump + meth!
        Since current hybrids utilize stock manifolds turbine back pressures are extremely high above 2:1. This creates exponentially high resistance and an abundance of heat on the top of the piston, in turn reducing power and efficiency. These issues have been rectified with our new manifold design as well as our high flow compressors and turbines. Therefore, higher pump gas numbers will be much more common utilizing our current platform.
      1. Sales@KRATOS's Avatar
        Sales@KRATOS -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Do we know what it will hit on pump gas at this time?
        We've already consistently made over 600whp on pump gas with our current CHRA's in stock machined comp covers and manifolds.
        Since we just received manifold castings literally the week before Sema, we have a couple weeks of tooling , setup, and machining still to do before we can start testing our new manifolds. Based on our CFD models the S55 community will not be disappointed!
      1. Sales@KRATOS's Avatar
        Sales@KRATOS -
        Click here to enlarge Originally Posted by Zel335 Click here to enlarge
        Now we just need a N55 solution Click here to enlarge.
        We've gotten quite a few inquiries regarding both the N55 and B58 platforms. Something we will be considering in the near future!