3.0t RSS

The BMW M2 F87 is one of the most celebrated driver's cars of its generation. Powered by BMW's N55B30T0 3.0-liter turbocharged inline-6, the original M2 delivers a raw, engaging driving experience that heavier M-cars simply can't match. A catless downpipe is the single highest-impact bolt-on upgrade for this platform — and at just $699.99, it's also one of the most affordable paths to serious power gains. This guide covers the full downpipe upgrade for the N55-powered M2 F87: catless vs. high-flow catted options, real-world power gains at every stage, exhaust sound transformation, installation, and why an ECU calibration is essential...

The BMW B58 3.0-liter turbocharged inline-6 is widely regarded as one of the best engines BMW has ever produced. Found in the 240i, 440i, 540i, 640i GT, and X4 M40i, the B58 combines smooth power delivery with remarkable tuning potential. The single most effective bolt-on modification for this platform is replacing the restrictive factory downpipe with a catless unit.This guide covers catless downpipe options across the entire B58 lineup, real-world power gains, exhaust sound changes, fitment, and why an ECU calibration is essential.The B58 3.0T — Platform OverviewThe B58 is BMW's 3.0-liter turbocharged inline-6, the spiritual successor to the legendary...