Corrects Boost-Level Limits. Eliminates compressor surge common in stock 1999.5 to 2003 Ford Power Strokes. Improves turbo performance at higher boost levels. Corrects Boost-Level Limits Eliminates compressor surge common in stock 1999.5-2003 Ford Power Strokes Improves turbo performance at higher boost levels 2-Year Limited Warranty Compressor Wheel, Turbocharger for use with Late 1999.5-2003 Ford 7.3L