BorgWarner S400SX 67mm FMW Turbo

BorgWarner's 67mm S400SX FMW turbocharger is one of the most impressive 67mm turbos available. This unusually high power design pairs a 91mm OD FMW compressor wheel (forged milled wheel, similar to EFR) with an ultra high flowing 83mm S400SX turbine wheel and 1.10 a/r (upgrade to 1.25 a/r available for 35+psi boost).

This combination provides huge exhaust flow energy without restriction It shares identical fitments to the GT42R and S372R setups (bolt-on for a T4 manifold and 4" downpipe).

The compressor stage starts with a ported shroud housing, including integrated velocity stack. Compressor wheel is BorgWarner's "FMW" (forged-milled-wheel) and uses the latest generation blade aero to reach ~94 lb/min max compressor flow. This is a journal bearing oil cooled only turbocharger ideally suited to competitive drag racing.