OVERVIEW

The Evolution Racewerks Competition Series 4" Catless Downpipe replaces the restrictive factory downpipe and catalytic converter on the N20 four cylinder turbo engine.

Evolution Racewerks quotes average gains of 14 to 16 wheel horsepower and 16 wheel torque on stock boost, rising to over 24 wheel torque with a software upgrade; gains will vary based on the other modifications on your car. The company also reports a higher maximum horsepower curve, a torque curve that arrives sooner and holds longer, better throttle response and faster turbo spool.

The downpipe is mandrel bent in 4" 304 stainless steel and fully TIG welded in house. It carries a factory-style stainless steel flex section so the exhaust can move naturally, and a factory-style exhaust hanger to support the system.

SPECS

Competition Series 4" catless downpipe
Horsepower gains of 14 to 16 whp average (gains vary with vehicle modifications)
Torque gains of 16 wtq average on stock boost, up to over 24 wtq with a software upgrade (gains vary with vehicle modifications)
Mandrel bent 4" piping for a smooth transition to the exhaust system
100% 304 stainless steel construction
100% TIG welded
Precision CNC machined turbocharger V-band flange
Stainless steel flex section like the factory unit, allowing proper exhaust movement and flexibility
Exhaust hanger like the factory unit to help support the exhaust system
Finishes: brush or mirror polish
Optional high temperature black thermal ceramic coating to reduce underhood temperatures (rated to 2000°F)
Optional additional O2 sensor bung for wideband O2 sensors, supplied with a pre-installed plug
Optional EGT sensor bung for EGT gauges, supplied with a pre-installed plug
Compatible with the factory or aftermarket exhaust systems
Made in the USA
Warranty: Evolution Racewerks Limited Lifetime Warranty.

PARTS INCLUDED

Competition Series 4" downpipe with stainless steel flex section and exhaust hanger
All hardware required for complete installation
Optional sensor bungs come with pre-installed plugs where that option is selected

TECH RESOURCES

Additional Parts Required

None. Evolution Racewerks specifies no additional hardware for this part.
A Vehicle Compliance Waiver must be signed by California residents before this part can ship.

Installation

Evolution Racewerks does not publish a downloadable installation guide for this part. Contact Evolution Racewerks technical support or Speed Logic for fitting guidance.

Notes

THIS ITEM IS NOT FOR SALE, INSTALLATION, OR USE ON LICENSED VEHICLES IN THE STATE OF CALIFORNIA. CAUTION: This product is intended for OFF ROAD COMPETITION USE ONLY. Not legal for use on pollution controlled vehicles upon public road/highways. THIS PRODUCT IS FOR SALE FOR ALL 49 STATES EXCLUDING CALIFORNIA. In addition to vehicle use verification, a Vehicle Compliance Waiver needs to be signed.
The item is for sale for international customers without restriction.
Part number BM-EXH008S is Evolution Racewerks' 528i (F10) downpipe; the X1, X3 and Z4 applications are built as a separate part (BM-EXH013S). Confirm which version your car needs with Speed Logic before ordering.

PART NUMBER

BM-EXH008S — Competition Series 4" Catless Downpipe, 2011–16 528i N20 (4 cylinder) engine
Base number recorded on the Speed Logic variants: BM-EXH008, BM-EXH008-P, BM-EXH008-blk
Evolution Racewerks catalogs the X1, X3, X4 and Z4 N20 application separately as BM-EXH013S

VEHICLE APPLICATIONS

Make	Model	Chassis	Engine	Years
BMW	528i	F10	N20 2.0L Turbo I4	2011–2016
BMW	X1 sDrive28i / xDrive28i	E84	N20 2.0L Turbo I4	2011–2015
BMW	X3 xDrive20i / xDrive28i	F25	N20 2.0L Turbo I4	2011–2017
BMW	Z4 sDrive28i	E89	N20 2.0L Turbo I4	2011–2016
BMW	X4 xDrive28i	F26	N20 2.0L Turbo I4	2014–2018