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    • The big Porsche 991.2 3.0 header test Part 2 - Manifold flow rate and manifold weight of Mimo/SPW vs. Kline vs. Vektor Performance vs. Stock

      Well, here it finally is! Apologies to our readers for taking so long but setting up such a test is not easy. The blessing in disguise is that a new option made the comparison and that option is made out of inconel and it is an engineering collaboration between Mimo Technik and SPW (Specialty Precision Welding).


      As you previously saw BoostAddict.com purchased the three most popular header options on the market for the 2017-2019 Porsche 991.2 3.0 Carrera models. You can make it four now.

      The idea was to compare the headers on the dyno but a flow bench was utilized instead. Why? Because the gains will vary on the dyno based on what modifications a car has as well as weather and cooldown time. A car like mine with upgraded turbos, methanol, inlets, intercoolers, etc., is going to move much more air than one with a tune running headers.

      Here we have repeatable, consistent results minimizing variables showing what the manifolds can flow.

      Fabspeed headers were not included in the test. Why? Because they are currently on the PorscheBoost 991.2 Project Car as Gintani felt they were the design they wanted to tune around. So you will get dyno numbers too but just for the Fabspeed option showing a before and after.

      Here are some important aspects to note:

      1. All headers show a large improvement over stock. This is why Porsche changed the manifold design on the 992 from the 991.2.
      2. Kline also makes an inconel header so if you want their lighter option, you can buy it.
      3. The competitors are not named.
      4. All headers purchased for this test are available for sale and basically brand new. PM @Sticky or e-mail admin@boostaddict.com to purchase at a discount. Why waste money?

      Flow numbers:




      Manifold weight:


      What we will say is Brand A offers the best combination of value, weight, and performance. The stock design truly is heavy and inefficient. Everyone tremendously improved on it and if you are tuning your car but still relying on the factory header design, why?

      The Mimo Technik and SPW header collaboration is the lightest and best performing. Yes, it is the most expensive but it is cheaper than Kline's inconel option. It is the choice for the guy who absolutely wants the best as well as track junkies.

      PM the @Sticky account if interested to purchase.

      Mimo/SPW:




      Kline:




      Vektor:




      This article was originally published in forum thread: The big Porsche 991.2 3.0 header test Part 2 - Manifold flow rate and manifold weight of Mimo/SPW vs. Kline vs. Vektor Performance vs. Stock started by Sticky View original post
      Comments 70 Comments
      1. F16HTON's Avatar
        F16HTON -
        You could’ve called them brand K and brand V
      1. Aatish's Avatar
        Aatish -
        Dope post! Now I need some headers. Next purchase come spring time
      1. quattr0's Avatar
        quattr0 -
        Click here to enlarge Originally Posted by F16HTON Click here to enlarge
        You could’ve called them brand K and brand V
        Click here to enlarge

        Thanks Joe for the data. On a different note...what is the status of your car? Were you waiting on clutch upgrade?
      1. Aatish's Avatar
        Aatish -
        Wait, the Mimo Tecknik headers were 3D-Printed?
      1. ///M3THOD's Avatar
        ///M3THOD -
        Nice post! Great information. I think this pretty much confirms what everyone was already thinking.
      1. Payam@BMS's Avatar
        Payam@BMS -
        Click here to enlarge Originally Posted by Aatish Click here to enlarge
        Wait, the Mimo Tecknik headers were 3D-Printed?
        Yessir! 3D printed in a couple pieces, then welded together in a Jig.
      1. Bowser330's Avatar
        Bowser330 -
        What is the purpose of headers?

        The faster you can exhaust the combusted air/fuel the quicker your turbos will spool and the more efficient you make the volumetric process?
      1. Sticky2's Avatar
        Sticky2 -
        Click here to enlarge Originally Posted by Bowser330 Click here to enlarge
        What is the purpose of headers?

        The faster you can exhaust the combusted air/fuel the quicker your turbos will spool and the more efficient you make the volumetric process?
        You're asking what the purpose of a turbo manifold is?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by F16HTON Click here to enlarge
        You could’ve called them brand K and brand V
        Wanted to avoid vendor fights.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by quattr0 Click here to enlarge
        On a different note...what is the status of your car? Were you waiting on clutch upgrade?
        Gintani is being their typical speedy selves.

        Missed SEMA naturally...
      1. 3DMetal's Avatar
        3DMetal -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Wanted to avoid vendor fights.

        • It's not proper to name your competitor.
        • The information collected is for improving the market, customers knowledge, and not to help the other brands.
      1. Aatish's Avatar
        Aatish -
        Curious to see how headers will play with the JB4.
      1. Aatish's Avatar
        Aatish -
        Click here to enlarge Originally Posted by Payam@BMS Click here to enlarge
        Yessir! 3D printed in a couple pieces, then welded together in a Jig.
        My industry is spreading to my hobby. Hell yea!!
      1. Sticky2's Avatar
        Sticky2 -
        Click here to enlarge Originally Posted by Aatish Click here to enlarge
        Curious to see how headers will play with the JB4.
        Perfectly?
      1. Bowser330's Avatar
        Bowser330 -
        Click here to enlarge Originally Posted by Sticky2 Click here to enlarge
        You're asking what the purpose of a turbo manifold is?
        what is the purpose of upgraded aftermarket headers that flow more air?
      1. quattr0's Avatar
        quattr0 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Gintani is being their typical speedy selves.

        Missed SEMA naturally...
        R they the only shop that you trust? Seems weird that they worked on other cars and are busy on Insta. Yours is sitting there for months?
      1. SeanWRT's Avatar
        SeanWRT -
        It doesnt tell story about the spool up, did it?
      1. Aatish's Avatar
        Aatish -
        Click here to enlarge Originally Posted by Sticky2 Click here to enlarge
        Perfectly?
        We'll find out spring. Click here to enlarge
      1. 3DMetal's Avatar
        3DMetal -
        + The MIMO Technik Manifolds weigh 10lbs less than the stock ones. ( if weight savings are important )

        + Have no ground clearance issues, as the free form design allows them to generously clear the cross member, so the engine is not the local minimum height. Port to port length and flow evenness are not compromised.

        + (1mm wall ) Inconel 625 - 3D Printed at a ISO 9001 AS9100 controlled facility. NI 625 is over 5x stronger than stainless steel at elevated temperatures. Many times more corrosion resistant too.

        + Highest flowing manifold design, without unnecessary manifold internal volume.
      1. quattr0's Avatar
        quattr0 -
        The usual 1 year warranty I assume?