• cp-e BMW N54 Downpipes. New Design, New Price. RWD+AWD Fitment for 1 and 3 Series BMW vehicles.

      At Custom Performance Engineering we are excited to be working with these great vehicles and in supporting the BMW platforms we constantly review our designs and products - bringing only the best to the market. The XI or xDrive 335i vehicles have quite a different design when it comes to the front sub frame. The tighter space, added geometry makes for a tight squeeze indeed, but its not impossible. We have taken our proven downpipe design and revised it to be compatible with both RWD and AWD 3-series BMW vehicles. Furthermore, the same design works on the 1-series cars with the N54 motor. This makes for more efficient engineering and manufacturing - allowing us to also revise the pricing.


      The downpipes feature a cast bellmouth with a machined V-band flange for an OEM-like fitment. The castings include a dimple for water line clearance - this ensures easy fitment. Castings allow for a smooth transition and tight radius turns - otherwise complex cutting and welding would need to take place which is neither cost effective or reliable in the long term.


      The castings transition from the OEM turbo outlet to 2.5" piping. We had explored doing 3" piping with the redesign - as has been popular with the N54 community - but physics dictates that air or, in this case, exhaust gas, will move as efficiently as the smallest pipe diameter will allow. Since the OEM cat-back exhaust is roughly 2.36" and aftermarket exhaust systems are 2.5" - a neck-down to 2.5" will be necessary for fitment regardless - which would, in turn, render any 3" piping prior to the reduction useless. This also goes a long way to keep the design functional, elegant and cost effective.

      The system is full 304 Stainless Steel piping with stainless castings and stainless laser cut flanges. TIG welded to perfection and quality. Piping is mandrel bent for smooth flow.


      Here is a full feature list as well as updated pricing.

      $649.90 - Catless offroad
      $949.90 - with High-flow catalysts

      CAM/CAD Engineering
      Full 304 Stainless construction
      Cast bellmouths for smooth transitions
      Mandrel bent tubing
      Laser cut flanges
      TIG welded
      Available with High Flow Catalytic converters
      Optional Wideband O2 bungs available
      Made in the USA
      Lifetime Warranty


      +12whp +10wtq


      Check out more photos on Facebook, or visit our website for info and ordering.

      http://www.facebook.com/gocpe

      h
      ttp://www.cp-e.com
      This article was originally published in forum thread: cp-e BMW N54 Downpipes. New Design, New Price. RWD+AWD Fitment for 1 and 3 Series BMW vehicles. started by www.cp-e.com View original post
      Comments 10 Comments
      1. Sticky's Avatar
        Sticky -
        Promoted to front page.
      1. J*U*icEd_n54's Avatar
        J*U*icEd_n54 -
        535i fitment???... When will it be available?...
      1. 5soko's Avatar
        5soko -
        So only difference between these and ur older version, is that now one downpipe will fit xi and i cars?
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        cp-E, is your 2.5" measured as ID or OD on the pipes?

        Many manufacturers claim 2.5" downpipes/exhaust when in fact they're 2.5" outer diameter Click here to enlarge
      1. www.cp-e.com's Avatar
        www.cp-e.com -
        Click here to enlarge Originally Posted by dzenno Click here to enlarge
        cp-E, is your 2.5" measured as ID or OD on the pipes?

        Many manufacturers claim 2.5" downpipes/exhaust when in fact they're 2.5" outer diameter Click here to enlarge
        2.5" OD, as most other manufacturers - its standard sized piping for US supplied Stainless Tubing. Also is close to ~64mm tubing - which is standard elsewhere.
        Wall thickness on our 16GA piping is around .06"
      1. www.cp-e.com's Avatar
        www.cp-e.com -
        Click here to enlarge Originally Posted by 5soko Click here to enlarge
        So only difference between these and ur older version, is that now one downpipe will fit xi and i cars?
        The piping has been redesigned to fit both XI and non-xi vehicles.
      1. www.cp-e.com's Avatar
        www.cp-e.com -
        535i fitment is pending.

        The vehicles are different from the 3 series. We are working on getting a car in for testing/measuring to get a 100% fit.
      1. www.cp-e.com's Avatar
        www.cp-e.com -
        Click here to enlarge Originally Posted by nomercy Click here to enlarge
        Do you make these in RHD or will they fit RHD vehicles, same goes for you Exhaust does it fit RHD vehicles (135 and 335)?
        The downpipes do fit both RHD and LHD vehicles.
      1. folgrz's Avatar
        folgrz -
        Wow awesome pricing! Hats off to you CP-E
      1. fundahl's Avatar
        fundahl -
        Can't wait to finally pick a set up along with the resonated mids.That 1M rear-section is very tempting as well..... Click here to enlarge