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

http://www.cp-e.com