The B58 Catless Downpipe for M340i and A90/A91 models enhances exhaust flow by eliminating the restrictive catalytic converter. Designed for the B58 engine, this downpipe boosts turbo spool and horsepower while providing a more aggressive exhaust note. Precision-engineered from high-quality materials, it ensures durability and optimized performance for enthusiasts seeking to maximize their vehicle’s potential. Installation is straightforward, making it an ideal upgrade for expert tuners aiming to improve throttle response and overall driving dynamics.
