Downpipe kit + Metallic catalytic 100CPSI

Turbo downpipe for BMW Z4 E89 with N20 2.0T engine
2012 2013 2014 2015

HJS High-Volume Metallic cat., 130mm, 100 CPSI. Made in Germany http://www.hjs-tuning.de/en/3/105/0/seite_1/Technics/Sport-Catalytic/sport_catalytic.html

Maximum flow, same performance increase as the Supersprint straight-pipe, cat deleting race system, great efficiency in decreasing emissions, lower engine operating temperature.

Built completely in Aisi 304 Stainless Steel, it replaces the OEM ceramic cat allowing an improved flow, better performance and a temperature reduction in the engine bay.

The position of the cat is similar to the OE-cat position.
By this we achieve a quick heating-up for a reduction of the pollutant gas in the cold-running-period.
Also no modifications on the wires for the Lambda-sensors are necessary.

This is the main factor in the performance increase of the Supersprint exhaust system.

CAUTION: may trigger the Check Engine Light due to an error relative to the 2nd O2 sensor. If this happens a ECU remap is necessary.