Tegiwa BMW E9X E90 E92 E93 M3 Decat Down Pipes Primary Cat Delete

TEGIWA E9X E90 E92 E93 DECAT DOWN PIPES PRIMARY CAT DELETE. As you probably know the primary cats are a huge restriction in the E9X M3 exhaust system. These are designed to simply replace the OE cats and are an easy DIY install as this uses a slip on clamp design.

The kit comes complete with the rear clamps.

Gains are 20 BHP and 20 lb/ft torque. An ECU Remap is required to remove CEL and provides an additional power gain over and above the de-cat pipe.

The OEM front wire gaskets are reuseable so do not need replacing.
Please note: this is designed for off-road/motorsport use only. You will not pass a UK emissions test or police road side check with this installed on the vehicle.