R44 BMW M3/M4 S58 Catless Downpipes NON-CEL (G80/G81/G82/G83)

We are proud to introduce our new R44 S58 Catless Downpipes for 2021 G80/G82 M3 & M4.  Reduce backpressure by eliminating the restrictive catalytic converter in the factory downpipe which results in a faster spool, an increase in power and a more aggressive exhaust note. Handcrafted from stainless steel and CNC precision-machined flanges constructed from billet 304-grade stainless steel.  The downpipe is supplied with a CAN MIL delete module to ensure no check engine light is shown from removing the factory catalytic convertor. The CAN BUS module is automatically DISABLED, if a BMW Tester is connected to the car. There will be NO error entry by using the LEIB CAN MIL DELETER. PRODUCT SPECIFICATION Made from hand-crafted, tig welded 304-grade stainless steel. Smooth radius bends to decrease turbulence and increase flow. Anti CEL light Technology. FEATURES Lighter weight than the factory system Quicker turbo spool Increased low end and mid-range power COMPATIBILITY - BMW G80 M