3" Catless Downpipes for N54 3.0L

The ARM Motorsports 3" catless downpipes are engineered to enhance the performance of your N54 3.0L engine by eliminating restrictive OEM catalytic converters. Constructed from durable 304 stainless steel, these downpipes boast a 3-inch diameter, which is optimized to improve exhaust flow and manage back-pressure effectively. The design includes two O2 sensor bungs, allowing for the reuse of factory BMW O2 sensors to maintain exhaust gas monitoring by the ECU. Because these downpipes are a catless design, an ECU tune or a CEL (Check Engine Light) fix will be necessary to prevent dashboard warning lights. These downpipes are intended for RWD vehicles only and are designed to work with Stage 2 tunes and higher boost levels. Included in the box are the ARM 3" Catless Downpipe Set, a hardware kit, and new gaskets. ARM Motorsports backs this product with a lifetime warranty against defects in craftsmanship or fitment. Please note that this product is for Off-Road Use Only and may be illegal for use on public roads in many locations.