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    • Maximum PSI stock S54 DME and stock internal Stage II E46 M3 turbo kit reaches 697 wheel horsepower

      BimmerBoost is happy to give credit where credit is due and credit is most certainly due here. Congratulations to Maximum PSI as well as Nick G of Technique Tuning for raising the bar on what a stock DME tuned E46 M3 turbo S54 inline-6 engine is capable. How does 697 wheel horsepower and 513 pound-feet of torque at the wheels with MS109 race gas sound? And how about the fact that they aren't done as E85 maps are planned?

      E85 dyno plots will come next and they are planning to offer map switching with different boost levels although this will likely not be possible on the fly. The fact it will be possible at all is something of a minor miracle. It is nice to see the E46 M3 platform maturing finally after all these years. Congratulations to all involved, dynograph and video below.




      This article was originally published in forum thread: Max PSI / Technique Tuning (Nick G) hit 697 wheel horsepower with turbo S54 stock internal stock DME started by folgrz View original post
      Comments 69 Comments
      1. folgrz's Avatar
        folgrz -
        Click here to enlarge Originally Posted by benzy89 Click here to enlarge
        Back to turbos?? Click here to enlarge I cannot lie, I've been looking all over the internet for a clean 6MT E46 M3
        Good luck, I'm going to look at one this weekend. Been looking for the past 8 months Click here to enlarge

        Hopefully this one checks out and its as clean as it looks.
      1. benzy89's Avatar
        benzy89 -
        Click here to enlarge Originally Posted by folgrz Click here to enlarge
        Good luck, I'm going to look at one this weekend. Been looking for the past 8 months Click here to enlarge
        From what I've seen, I totally understand -- Everything I've found is either super high mileage (90k+), super molested or Private Sale at a ridiculous price.

        Good luck & I hope the car turns out to be legit for you.
      1. folgrz's Avatar
        folgrz -
        Click here to enlarge Originally Posted by benzy89 Click here to enlarge
        From what I've seen, I totally understand -- Everything I've found is either super high mileage (90k+), super molested or Private Sale at a ridiculous price.

        Good luck & I hope the car turns out to be legit for you.
        This +100000000

        Some of these guys selling their E46's think they're worth more than gold!
      1. Artsoasis's Avatar
        Artsoasis -
        I am already saving my pennies in afghanistan for this kit Click here to enlarge
      1. Crackers's Avatar
        Crackers -
        You use boost contrôler With 3 map of boost?
      1. ezec63's Avatar
        ezec63 -
        Do all these big HP e46 m3's run a 6mt? Any SMG's out there with big HP and possibly a built trans/clutch upgrade?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by ezec63 Click here to enlarge
        Do all these big HP e46 m3's run a 6mt? Any SMG's out there with big HP and possibly a built trans/clutch upgrade?
        SMG is the same basic thing just hydraulically actuated.
      1. ezec63's Avatar
        ezec63 -
        So does anyone run a high HP e46 m3 with the smg and an upgraded clutch?
      1. ezec63's Avatar
        ezec63 -
        .
      1. benzy89's Avatar
        benzy89 -
        Click here to enlarge Originally Posted by ezec63 Click here to enlarge
        So does anyone run a high HP e46 m3 with the smg and an upgraded clutch?
        Yea, there are a few Horsepoewr Freaks cars that are SMG. This should be no different.
      1. folgrz's Avatar
        folgrz -
        Click here to enlarge Originally Posted by ezec63 Click here to enlarge
        So does anyone run a high HP e46 m3 with the smg and an upgraded clutch?
        HPF Stage 2 feramic clutch should be fine along with some fresh smg pump fluid
      1. Petrolhead's Avatar
        Petrolhead -
        Yes, but most chose the manual. HPF has had a few very powerful smg.
      1. Commanderwiggin's Avatar
        Commanderwiggin -
        SMG is asking for something to break.
      1. inlineS54B32's Avatar
        inlineS54B32 -
        Click here to enlarge Originally Posted by Commanderwiggin Click here to enlarge
        SMG is asking for something to break.

        IDK - I had SMG, and beat the crap out of it. Click here to enlarge

        However, my car had 333 HP - this has about double... Point is, the transmission is the same manual or SMG; the clutch is what is hydraulically actuated - the load isn't on the SMG parts if that makes sense... A few guys have very high HP SMG cars, and I don't hear of too many transmission failures. However, I do know that some also swap to pure manual - so who knows for sure.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by ezec63 Click here to enlarge
        So does anyone run a high HP e46 m3 with the smg and an upgraded clutch?
        Of course.
      1. Commanderwiggin's Avatar
        Commanderwiggin -
        I have heard nothing but problems with the SMG on higher powered HPF cars...my buddy Huy was one of the only ones I know who didn't and that was a stage 2...and he recently did the 6MT swap. One of the original stage 3 owners had so many problems with his setup he pulled the kit and sold everything separate. So much wasted time doing teach-in crap etc...

        Not worth the trouble imo.

        That being said I'm sure the MaxPSI setup in its current state will work amazing with the SMG...anything over a Stage 2 though...I will reserve opinion for truth. I'm sure they'll have a bulletproof setup eventually but it'll probably require some challenges to be overcome.
      1. PEI330Ci's Avatar
        PEI330Ci -
        Click here to enlarge Originally Posted by Commanderwiggin Click here to enlarge
        SMG is asking for something to break.
        E46Fanatics sponsored an E46 M3 SMG road race car at one point. The driver was Ralph Warren. Anyway, they had a lot of issues with the SME pump/actuators overheating, and eventually moved on to a different race car. I don't know anyone that's done anything more serious than that car for semi-pro racing...and made the SMG work.
      1. Brey335i's Avatar
        Brey335i -
        I'm sure the SMG can be made to work out just fine but I am a 6MT guy at heart.

        This kit has me seriously considering just waiting longer and going with a MaxPSI turbo kit from the start instead of a SC kit.
      1. Tonester's Avatar
        Tonester -
        Great work guys!! Amazing #'s on a stock DME.
      1. PEI330Ci's Avatar
        PEI330Ci -
        Click here to enlarge Originally Posted by PEI330Ci Click here to enlarge
        E46Fanatics sponsored an E46 M3 SMG road race car at one point. The driver was Ralph Warren. Anyway, they had a lot of issues with the SME pump/actuators overheating, and eventually moved on to a different race car. I don't know anyone that's done anything more serious than that car for semi-pro racing...and made the SMG work.
        I should clarify: I'm talking about the road racing environment, not on street cars or drag racing environment.