Evolution Racewerks Competition Series Catless Downpipe - B58

OVERVIEW

The factory catalytic converter is a major exhaust flow restriction — exhaust gas has to force its way through tightly-packed catalyst "honeycomb" material to get out of the downpipe, and it also creates turbulence downstream that slows exhaust velocity further. The Evolution Racewerks Competition Series Catless Downpipe removes that restriction entirely with a 4.5" mandrel-bent design matched to the B58's larger turbo outlet, unlocking real gains throughout the powerband rather than just at peak.

SPECS

• 4.5" mandrel-bent piping — sized to the B58's larger turbo outlet (vs 4" on N55)
• CNC-machined billet 304 stainless steel V-band flange, duplicated from the factory turbo housing
• Stainless steel O2 sensor bung retained at the factory location
• 100% 304 stainless steel construction, 100% TIG welded in-house
• Higher max horsepower and a stronger, earlier torque curve — turbo spools faster with less lag
• Made in the USA

PARTS INCLUDED

• 1x Competition Series catless downpipe (finish per variant)

TECH RESOURCES

• Best paired with a supporting ECU tune such as the bootmod3 B58 Tune
• Intended for off-road/competition use only — not legal for use on pollution-controlled vehicles on public roads/highways, and not available for sale in California

PART NUMBER

• Brush Finish: BM-EXH018S
• Polish Finish: BM-EXH018P
• Ceramic Thermal Coating: BM-EXH018TB

VEHICLE APPLICATIONS

Please confirm exact fitment for your VIN before purchase.