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      11-06-2018, 04:18 PM   #1
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Drives: 2007 335i, 2015 M3
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Competition Series 4" Catless Downpipe For B46 Engine - 10% OFF INTRO SALE!!


Competition Series 4" Catless Downpipe For B46 Engine


Introducing our new Competition Series 4" Downpipes for your BMW B46 four cylinder turbo engine! Fits all 2016+ 230i / 330i / 430i / 530i!

Ease of Installation: (1 Easy, 5 Hard) 3

Installation Guide

Parts Checklist

Key Features:

Now available for the 2016+ BMW 230i / 330i/ 430i / 530i B46 Engine!
Horsepower gains of 14 to 16whp average (gains will vary based on modifications of your vehicle).
Higher Max Horsepower Power Curve
Torque gains of 16wtq average (stock boost) up to over 24 wtq (Software upgrade) (gains will vary based on modifications of your vehicle).
Higher Intial Torque Curve. Torque curve hits faster and higher and longer.
Better throttle response and faster turbo spool up times.
Mandrel Bent 4" piping. Smooth transition to the exhaust system.
100% Stainless Steel Construction
100% TIG welded for better quality welds
Precision CNC machined turbocharger V-Band flange.
Precision CNC machined ball joint flange with straight flow interior (versus factory press formed ball joint)
Stainless steel flex section like factory that allows proper exhaust movement and flexibility.
Mirror polish or brush finish
Available with high temperature black thermal coating to reduce underhood temperatures.
Optional - Additional O2 sensor bung for wideband O2 sensors (comes with pre-installed plug)
Optional EGT sensor bung for EGT gauges (comes with pre-installed plug)
Retains the factory "ball" type v-band connector.
Improved design of "ball" connector for better flow characteristics over factory connector.
Compatible with the factory or aftermarket exhaust systems.
Track tested durability.
Includes all hardware for complete installation.
Limited Lifetime Warranty.

Last edited by; 01-13-2019 at 05:46 PM..