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    • 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. daytonaM3's Avatar
        daytonaM3 -
        Click here to enlarge Originally Posted by undercover Click here to enlarge
        The sweedish dyno results are crankshaft and not in a e46 as well. And if I was on Larrys dyno..... It'd made moreClick here to enlarge
        The Sweedish numbers are meassured at the hubs with a dynapack and they read lower as a dynoyet,i have seen enough tests between these two dyno,s with the same car.

        The e46 from Sweden did 9.xx with 800+Whp.
      1. Twinturbom3's Avatar
        Twinturbom3 -
        Click here to enlarge Originally Posted by daytonaM3 Click here to enlarge
        The Sweedish numbers are meassured at the hubs with a dynapack and they read lower as a dynoyet,i have seen enough tests between these two dyno,s with the same car.

        The e46 from Sweden did 9.xx with 800+Whp.
        Swedes are very good at BMW turbos.
      1. 2swoosh's Avatar
        2swoosh -
        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        Daaamn! So this is what you were telling me about on *************!? Now time to find a 1k hp Benz to run with it for the BMW vs Benz shootout coming up!
        this shootout is limited to Benz vs Bmw only and no other cars cars? when where is the event?
      1. PureEnthusiast's Avatar
        PureEnthusiast -
        Click here to enlarge Originally Posted by daytonaM3 Click here to enlarge
        The Sweedish numbers are meassured at the hubs with a dynapack and they read lower as a dynoyet,i have seen enough tests between these two dyno,s with the same car.

        The e46 from Sweden did 9.xx with 800+Whp.
        Well damn, if they did 9.xx with 800whp... I can only imagine what they'd run on 1000whp.
      1. undercover's Avatar
        undercover -
        It appears that PFF is the record holder for now. I'd love to see both cars on a dynojet.
      1. undercover's Avatar
        undercover -
        Click here to enlarge Originally Posted by Twinturbom3 Click here to enlarge
        This is my 990 whp on dyno Dynamics back in 2010, march. Date is shown on left bottom. Measured in shoot out mode which reads 15 % less than dyno jet. This is 1150 whp on dno jet.

        Attachment 35469


        This 990 whp Dynamics was out of 3,2L and from a less developed S54.
        When I road tested the above power on road I was disappointed, very late spool.

        During the 4 years we managed to improve S54, now it is 3500 cc, 12;5 compression, custom cams, custom head work....
        As of today, low and mid range has improved dramatically. I dynoed up to 6000 rpm to see the difference. Thanks GOD low / mid range improved from 180 whp up to 280 whp. My S54 B35 hits 15 psi in 2nd gear @ 3700 rpm, 30 psi @ 4500 rpm with twin 62 mm turbos as of today.

        BTW I like your Project, keep up the good work. Other power, focus on traction, traction. These RWD M3s suffer from loss of traction. Not the strongest M3 will be the fastest, but the M3 with best traction will be the fastestClick here to enlarge

        I strongly agree that traction is key. Thank god for one of the best traction control and launch strategies out there via ProEFI
      1. PureEnthusiast's Avatar
        PureEnthusiast -
        Click here to enlarge Originally Posted by undercover Click here to enlarge
        It appears that PFF is the record holder for now. I'd love to see both cars on a dynojet.
        What are their numbers?
      1. ChuckD05's Avatar
        ChuckD05 -
        Click here to enlarge Originally Posted by 2swoosh Click here to enlarge
        i'm highly considering doin a killer set up i have two e46 m3s one (03) with hpf S2 already has a ProEfi set up but with stockish motor and newer SMG and one (02 vert) with a fully built motor 6 speed but has a T Trim blower but no ProEfi, so i'm thinkin transferring the hpf kit and ProEfi to the 02 since the motor can support the hp build, i'll be happy with 800 solid reliable rwhp if you don't mind it's a vert and show car condition. i'll come down to your shop and inspect your facility as well as check your M3 with the mogu hp. PM sent.
        You sir have an epic car collection :0)

        Are you close to undercover? I met them at a drag event at atco recently and I would def recommend giving them your business, great group of people.
      1. 2swoosh's Avatar
        2swoosh -
        I've met Garth before in his old shop with the old dyno which he frequently destroys with those animal Supras i've never been to the other shop with the new Mustang awd dyno and this latest M3 creation he's got but i'll stop over tonight. My full build(motor and all gears upgrade) 996 tt is near completion from Long island NY and will go straight to his shop for dynotuning since he is a certified ProEfi tuner hopin to break the 1000 awhp goal
      1. Group.america's Avatar
        Group.america -
        Click here to enlarge Originally Posted by undercover Click here to enlarge
        Neither are for the faint wallet unfortunately. This particular combo is around 16k plus 6k for internals and machining on the short block.
        yeah that is actually a good price to get to that performance
      1. Group.america's Avatar
        Group.america -
        Click here to enlarge Originally Posted by 2swoosh Click here to enlarge
        I've met Garth before in his old shop with the old dyno which he frequently destroys with those animal Supras i've never been to the other shop with the new Mustang awd dyno and this latest M3 creation he's got but i'll stop over tonight. My full build(motor and all gears upgrade) 996 tt is near completion from Long island NY and will go straight to his shop for dynotuning since he is a certified ProEfi tuner hopin to break the 1000 awhp goal

        You don't happen to live around Southampton NY ?

        I saw an uber quick red E46 M3 a few weeks back snorting and ripping along the back roads in WHB - looked very nasty, very quick
      1. undercover's Avatar
        undercover -
        Click here to enlarge Originally Posted by ChuckD05 Click here to enlarge
        You sir have an epic car collection :0)

        Are you close to undercover? I met them at a drag event at atco recently and I would def recommend giving them your business, great group of people.

        Thanks Chuck!!!
      1. GG///M3's Avatar
        GG///M3 -
        Click here to enlarge Originally Posted by Twinturbom3 Click here to enlarge
        This is my 990 whp on dyno Dynamics back in 2010, march. Date is shown on left bottom. Measured in shoot out mode which reads 15 % less than dyno jet. This is 1150 whp on dno jet.

        Attachment 35469


        This 990 whp Dynamics was out of 3,2L and from a less developed S54.
        When I road tested the above power on road I was disappointed, very late spool.

        During the 4 years we managed to improve S54, now it is 3500 cc, 12;5 compression, custom cams, custom head work....
        As of today, low and mid range has improved dramatically. I dynoed up to 6000 rpm to see the difference. Thanks GOD low / mid range improved from 180 whp up to 280 whp. My S54 B35 hits 15 psi in 2nd gear @ 3700 rpm, 30 psi @ 4500 rpm with twin 62 mm turbos as of today.

        BTW I like your Project, keep up the good work. Other power, focus on traction, traction. These RWD M3s suffer from loss of traction. Not the strongest M3 will be the fastest, but the M3 with best traction will be the fastestClick here to enlarge
        That graph looks a lot like this 1

        Click here to enlarge
      1. undercover's Avatar
        undercover -
        [QUOTE=GG///M3;531228]That graph looks a lot like this 1

        http://www.vwboost.com/images/import...erdynovi-1.jpg[/QUOTE

        OMFG LOLOL
      1. GG///M3's Avatar
        GG///M3 -
        [QUOTE=undercover;531230]
        Click here to enlarge Originally Posted by GG///M3 Click here to enlarge
        That graph looks a lot like this 1

        http://www.vwboost.com/images/import...erdynovi-1.jpg[/QUOTE

        OMFG LOLOL
        Click here to enlarge
      1. Bmwandreas's Avatar
        Bmwandreas -
        It made 1260 Wheel HP DIN corrected. Itīs 1280-1290 SAE corrected.
      1. 2swoosh's Avatar
        2swoosh -
        Click here to enlarge Originally Posted by Group.america Click here to enlarge
        You don't happen to live around Southampton NY ?

        I saw an uber quick red E46 M3 a few weeks back snorting and ripping along the back roads in WHB - looked very nasty, very quick
        Went to his other shop last night (within half hour from me) and seen the m3 it looked 100% stock exterior/interior but the engine bay is holy s...!!! that Saad manifold is like jewel i also saw an Evo 1X with 800 awhp and a red Supra with a monster 108 mm dual BB turbo getting ready for Texas this spring? another one that caught my eyes was aFord Mustang Cobra with twin turbo set up and ProEfi ECM.
      1. Twinturbom3's Avatar
        Twinturbom3 -
        Click here to enlarge Originally Posted by Bmwandreas Click here to enlarge
        It made 1260 Wheel HP DIN corrected. Itīs 1280-1290 SAE corrected.
        Andreas, keep up the good work.
      1. Sticky's Avatar
        Sticky -
        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.

        Click here to enlarge

        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

        Click here to enlarge


        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
      1. undercover's Avatar
        undercover -
        Theres so much left in it. Its almost annoying. Especially under the curve.