• Who has the most powerful E46 M3 in the world? Undercover Performance going for the record with 1200+ horsepower turbo E46 M3 S54

      Who has the most powerful E46 M3 in the world? There are conflicting reports all around. A certain BimmerBoost user proclaims they have the most powerful E46 M3 based on 60-130 runs but without a standard dyno to compare on it's difficult to say. The now defunct HPF (Horsepower Freaks) made over 1000 wheel horsepower with a Stage V setup using a Precision 8285 turbocharger. Undercover Performance is throwing their hat in the ring to claim the title also boasting over 1000 wheel horsepower.


      This car has a Precision 7675 turbocharger and is running E85. The result on a Mustang Dyno is 1058 wheel horsepower with room to spare. Undercover states there is room to push further but at this point it is up to the customer if they want to take any more risks. Where this level of horsepower stands in the E46 M3 spectrum is tough to say until we can definitively establish on a single dyno who is making what horsepower. For example, what would this particular car put down on a Dynojet? Likely quite a bit more.

      Regardless, the specifications and dynograph are below. This certainly is one of the strongest E46 M3's out there.

      1058 rwhp
      785 rwtrq
      E85
      25 PSI
      .958 correction




      Saad Racing E46 M3 Turbo Kit
      Saad built engine with 6.5k miles on it at 800+whp(Rods, Pistons, Tool Steel Main and Head Studs), the rest......STOCK!
      ProEFI tuned by Garth@undercover
      ProEFI Lightning Ignition
      Saad Stage 2 Fuel System
      7675 Standard cover Dbb Precision Turbo
      2150 FIC Injectors
      Custom Direct Port Nitrous by Undercover yet to be used
      Tilton Triple Disk
      DSS Axles
      Mason Engineering Sub Frame/Floor Brace and tower brace
      Saad rear control arms
      VAC Motorsports Vanos Delete
      This article was originally published in forum thread: Highest HP E46 M3 @undercover started by undercover View original post
      Comments 56 Comments
      1. Flinchy's Avatar
        Flinchy -
        Nothing until like 4500rpm? Almost 5k? That's a nasty looking curve Click here to enlarge
      1. Flinchy's Avatar
        Flinchy -
        Also curious about the vanos delete? Wouldn't that make everything worse? Spool, power, reaponse, off boost... Everything?
      1. daytonaM3's Avatar
        daytonaM3 -
        [QUOTE=Sticky;531640]Who has the most powerful E46 M3 from BIMMERBOOST do you mean ?

        Look at post 37 from Andreas, because he has not post a dynograph it is not true? you can believe it is true,if you do not believe him you have to learn a lot because PPF is one of the pioneers of building/tuning turbo BMW.

        Do not forget that not everybody shows their build on the internet Click here to enlarge
      1. Bmwandreas's Avatar
        Bmwandreas -
        He is still the fastest and quickest and it has full interior and is street drivenClick here to enlarge
      1. 0-60Motorsports's Avatar
        0-60Motorsports -
        Congrats!!! Awesome job. Well done.
      1. GearHead03's Avatar
        GearHead03 -
        well over 1200 on a Dynojet
      1. Mikecoupe's Avatar
        Mikecoupe -
        Saad Racing was $#@! talking more as 1,5 year ago(E46fanatics) that they would make the first 9 second run(2012/2013) and other bs claims,never heard of him again.

        Like i said earlier tuning a M3 engine is more difficult(Vanos,etc) as a Supra if you want to do it right.


        -No hp record
        -No 1/4 mile record
      1. Bmwandreas's Avatar
        Bmwandreas -
        I posted the dynograph but it doesnīt come up here? Itīs on e46fanatics if someone wants to see it.
      1. Eleventeen's Avatar
        Eleventeen -
        Wow, that is ridiculous power on a Mustang dyno.
      1. mjmarovi's Avatar
        mjmarovi -
        Click here to enlarge Originally Posted by Bmwandreas Click here to enlarge
        I posted the dynograph but it doesnīt come up here? Itīs on e46fanatics if someone wants to see it.
        I see it....what kind of dyno is that? 1260whp is nuts on that little car, actually it's nuts on any car
      1. Sticky's Avatar
        Sticky -
        [QUOTE=daytonaM3;531805]
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Who has the most powerful E46 M3 from BIMMERBOOST do you mean ?

        Look at post 37 from Andreas, because he has not post a dynograph it is not true? you can believe it is true,if you do not believe him you have to learn a lot because PPF is one of the pioneers of building/tuning turbo BMW.

        Do not forget that not everybody shows their build on the internet Click here to enlarge
        I agree with you. I'm just saying that kind of thing makes it hard to say who has the most horsepower.
      1. deemo319's Avatar
        deemo319 -
        Great work.
      1. undercover's Avatar
        undercover -
        Thank you^!. Car was just picked up. The test drive quite successful. Stay tuned for upcoming track events and what the future holds for its next upgradeClick here to enlarge
      1. 2swoosh's Avatar
        2swoosh -
        great job there Undercover now i'm next on line Click here to enlarge
      1. 2swoosh's Avatar
        2swoosh -
        never mind double post
      1. tripleblackrag's Avatar
        tripleblackrag -
        Click here to enlarge Originally Posted by undercover Click here to enlarge
        Thank you^!. Car was just picked up. The test drive quite successful. Stay tuned for upcoming track events and what the future holds for its next upgradeClick here to enlarge
        I am looking forward to having you tune my Saad Stage 3 once the build comes together. Great chatting with you and thanks for all the detail.