Active Autowerke X - Pipe Add - On Front Pipes W/ GESI G - Sport Cats - E9X M3 (11-083) 1670 is all you will hear

is all you will hear about this 8-layer oiled cotton gauze air filter that is included with the EVO9004C cold air intake system

The HPS Performance Air Filter is designed with performance in mind

HPS light weight 4" mandrel-bent aluminum alloy piping replace the stock restrictive air box and optimize the air flow with long lasting durability

4 Supercharged (GT500) 2009 Ford Mustang Engine: 4

0 1977 Buick LeSabre Engine: 7

Active Autowerke X - Pipe Add - On Front Pipes W/ GESI G - Sport Cats - E9X M3 (11-083) 1670 is all you will hearThe Active Autowerke X Pipe Add On Front Pipes with GESI G Sport catalytic converters for the BMW E9X M3 (part 11 083) integrate seamlessly with the Active Autowerke Signature Track Pipe and X Pipe system. Designed to eliminate the Check Engine Light (CEL) without requiring a tune, this bolt on solution maintains compliance with EPA emissions specifications. Includes two 4" high flow GESI catalytic converters that do not trigger a CEL Constructed from