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    • ESS VT3-725 supercharged built motor E92 M3 S65 V8 compared to VT2-625 - Underwhelming results?

      There are going to be several built motor supercharged S65 V8 M3 V8 setups starting to roam the streets this year. ESS will have the VT2-725, Gintani will have their Stage III and Stage III+, and Active Autowerke will have their level 4. Each takes a different approach with ESS using the same Vortech V3Si blower their kits already employ, Gintani offering Vortech T-Trim, V3, and YSI options, and Active Autowerke employing a Rotrex C-38 but is able to accommodate other blowers as well.

      Here is the different between a VT3-725 and a VT2-625 supercharger setup, both on DCT M3's with meth in SAE correction:


      645 wheel for the built motor setup and 586 wheel for the stock internal setup. VT2-650 kits claim to be over 600 wheel on stock internals so one has to ask themselves if it is worth the cost to build a motor for only 50 wheel horsepower? $15,000+ on top of the supercharger kit for 50 wheel? Sure this power will likely be more reliable but one has to scratch their head at this price for performance ratio. It certainly makes sense to upgrade to a VT3 setup if one were to take the stock motor too far though.

      The Vortech blower used here is approaching its limit. For a built motor application, it would seem to be a bit undersized as 12 psi is not providing all that much versus the 7.5 psi of the stock internal kit partially due to the lower compression. To really see solid gains a bigger blower is necessary. Gintani has shown up to 16.5 psi with a Vortech YSI thus far and higher dyno results on the lower reading Dyno Dynamics dyno.

      Hopefully a comparison of the three major built motor setups will be able to be made soon.
      This article was originally published in forum thread: ESS VT3-725 supercharged built motor E92 M3 S65 V8 compared to VT2-625 - Underwhelming results? started by Sticky View original post
      Comments 173 Comments
      1. ultimateendz's Avatar
        ultimateendz -
        had no idea the S65s ran 12.x AFR....interesting
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by ultimateendz Click here to enlarge
        had no idea the S65s ran 12.x AFR....interesting
        Well... that depends on the tuner.
      1. ultimateendz's Avatar
        ultimateendz -
        what do they range from?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by ultimateendz Click here to enlarge
        what do they range from?
        Check out the links and look at some of the other graphs and air/fuel.
      1. ultimateendz's Avatar
        ultimateendz -
        links?....i dont wanna go through the 5million S65 dynos searching for that....lol
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by ultimateendz Click here to enlarge
        links?....i dont wanna go through the 5million S65 dynos searching for that....lol
        You have links in the OP.
      1. ultimateendz's Avatar
        ultimateendz -
        seems they all run AT LEAST 12.00 AFR
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by ultimateendz Click here to enlarge
        seems they all run AT LEAST 12.00 AFR
        Like I said, depends on the tuner/setup.
      1. ultimateendz's Avatar
        ultimateendz -
        ok...so ESS, GINTANI, and AA seems to be running AT LEAST 12.00AFR in their shop cars....is that a solid assumption?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by ultimateendz Click here to enlarge
        ok...so ESS, GINTANI, and AA seems to be running AT LEAST 12.00AFR in their shop cars....is that a solid assumption?
        No.

        It's a solid assumption that this ESS build motor kit and the AA built motor kit are running 12.00 AFR.

        If you look at some of the other dynos you will see some guys go pretty lean while others go a bit rich.
      1. ultimateendz's Avatar
        ultimateendz -
        can you show me a thread where its under 12.00?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by ultimateendz Click here to enlarge
        can you show me a thread where its under 12.00?
        Honestly, I have a ton of work to do. I just recommend searching the S65 forum.
      1. ultimateendz's Avatar
        ultimateendz -
        honestly i dont see squat for gintani or VF.....only ESS and AA
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by ultimateendz Click here to enlarge
        honestly i dont see squat for gintani or VF.....only ESS and AA
        Well Gintani dynos pretty much come from the Dyno Dyanmics but come on man you can search there is a ton of stuff.
      1. ultimateendz's Avatar
        ultimateendz -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Well Gintani dynos pretty much come from the Dyno Dyanmics but come on man you can search there is a ton of stuff.
        ive been through 6 gintani dyno threads already....if you already know which one to go to just tell me....
      1. flipm3's Avatar
        flipm3 -
        Regardless of cost, I think Drew's car will be extremely quick! I can't wait for him to post some solid times both quarter mile and 60-130mph to see how they stack up to his previous times.

        It would be interesting to see some the built Gintani motors at similar PSI.

        At any rate, I love how all these companies are expanding the limits of the S65B40. Great to see clients and companies investing big money to push the envelope further and further.
      1. Sledgehammer's Avatar
        Sledgehammer -
        Call me crazy I just expect motor power from a FI built V8 anything...
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by ultimateendz Click here to enlarge
        ive been through 6 gintani dyno threads already....if you already know which one to go to just tell me....
        Dude I don't know I would have to through the whole forum and collect dynos for you and present them to you and I have other things to do.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Sledgehammer Click here to enlarge
        Call me crazy I just expect motor power from a FI built V8 anything...
        You aren't the only one.
      1. flipm3's Avatar
        flipm3 -
        Click here to enlarge Originally Posted by ultimateendz Click here to enlarge
        ok...so ESS, GINTANI, and AA seems to be running AT LEAST 12.00AFR in their shop cars....is that a solid assumption?
        Not sure about other companies but I recently saw dynos of an ESS VT2-600 running at the richest 13.0 AFR at redline. Every where else was relatively leaner.