VRSF BMW N55 EWG Catless Downpipe

This downpipe is the best bang-for-buck modification available for the N55. Backpressure is significantly reduced by eliminating the restrictive catalytic converter in the factory downpipe entirely, resulting in faster turbo spool, a genuine increase in power (20-25hp with a tune), and a more aggressive exhaust note.

Hand-crafted from mandrel-bent SS304-grade stainless steel with smooth radius bends to decrease turbulence, CNC-precision-machined flanges are also constructed from billet 304-grade stainless steel. This downpipe is a direct bolt-on application with no cutting necessary, and fits the stock catback as well as all aftermarket catbacks.

Important: this 4in downpipe is specific to EWG (electronic wastegate) N55 vehicles, generally production after 07/13 for M135i and 335i. M235i, 435i, and F87 M2 models were only ever produced with EWG, so all three require this 4in version exclusively.

Intended use: removal of emissions equipment means this part is intended for closed-course/competition use, not for road use where emissions compliance is required.

Why Choose This Downpipe

• Genuine 20-25hp gain with a tune
• Fully catless design for maximum exhaust flow and turbo response
• Direct bolt-on application, no cutting necessary
• Fits both stock and aftermarket catbacks
• Hand-crafted mandrel-bent SS304 stainless steel with CNC billet flanges
• Fits both RHD and LHD models
• Lifetime warranty plus "No Hassle" satisfaction guarantee on fitment

Compatibility

• BMW F20/F21 M135i (N55, EWG, production after 07/13)
• BMW F22/F23 M235i (N55, EWG only)
• BMW F30/F31/F34 335i (N55, EWG, production after 07/13)
• BMW F32/F33/F36 435i (N55, EWG only)
• BMW F87 M2 (N55, EWG only)

EWG only. PWG-equipped vehicles (production up to 07/13) require VRSF's separate 3.5in catless downpipe, sold separately.