Close

    • Stock internal BMW F87 M2 DCT N55B30T0 hitting 675 rwhp with BorgWarner EFR 8374 turbocharger

      Impressive output out of this BMW F87 M2 when you consider it is not a competition model and it has the old N55B30T0 motor. The turbo was swapped out for a Borg Warner 8374 turbocharger and boy does it make a difference.


      How does 675 horsepower and 630 lb-ft of torque at the wheels sound?


      This car was tuned by Motiv Motorsport through MHD.

      This is definitely one of the stronger N55B30T0's out there and it is on the stock engine internals. The turbo kit setup is from Speedtech.

      It is tuned on E85 with 27-28 psi of boost.

      Beyond that, not much else was shared but this sure is an impressive M2.

      This article was originally published in forum thread: Stock internal BMW F87 M2 DCT N55B30T0 hitting 675 rwhp with BorgWarner EFR 8374 turbocharger started by Sticky View original post
      Comments 7 Comments
      1. jeff15's Avatar
        jeff15 -
        This is very nice power for the N55!! Would be fun to daily around in that. Although I think I would run a little less out of these N55's to be safe.
      1. Terry@BMS's Avatar
        Terry@BMS -
        Curious to see how durable the N55 turns out to be with larger single turbo kits relative to the tried and true N54.
      1. Jerain's Avatar
        Jerain -
        Well in the M2 the N55 is at it's best so it could take that hp from a single turbo without too much low end torque... Curious what fueling it needs to be at that level.
      1. TheAxiom's Avatar
        TheAxiom -
        Heads on the N55 are the same as the S55, I think it shares the S55 crank and Pistons. The only question would be the block itself.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Jerain Click here to enlarge
        Well in the M2 the N55 is at it's best
        How so?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by TheAxiom Click here to enlarge
        The only question would be the block itself.
        Early reports were it was closed deck but it turns out it is the same block so I don't see the N55B30T0 doing anything the N55 can't unless the S55 crank and pistons offer some large headroom.
      1. F87Source's Avatar
        F87Source -
        No I believe the head on the m2's n55 is just a standard n55 head. The crank is the forged m235i crank shared with the m235ir, and x4m40i, and the pistons are standard n55 pistons with s55 rings. The open deck block should be fine, but at some point (700whp+ maybe?) you'll likely run into issues. The best part is the forged crank since the n55 has had some reports of those snapping.