Fabspeed BMW N63/S63 Sport Cat Downpipes (2008-2014) tensioners Turbocharges as they spool up

Turbocharges as they spool up give a great enhanced whistling that all turbo owners love

Fits all Porsche 997 Carrera vehicles from 2005-2008

2 Turbo requires two filters

You’ll see well over 700 whp (wheel horsepower) (770 HP at the crank)

The more efficiently an engine breaths

Fabspeed BMW N63/S63 Sport Cat Downpipes (2008-2014) tensioners Turbocharges as they spool upReplaces the restrictive factory catalytic converters with high flow 200 cell HJS cats for more sound and power. FITMENT: X6 xDrive50i (2008 2012) X6 ActiveHybrid (2010) X6 M (2010 2012) X5 xDrive50i (2011 2012) X5 M (2010 2012) 550i (2011 2012) 550i xDrive (2011 2012) 550i GT (2010 2012) 550i GT xDrive 2010 2012) Alpina B7 (2011 2012) Alpina B7L (2011 2012) Alpina B7 xDrive (2011 2012) Alpina B7L xDrive (2011 2012) 750i (2010 2012) 750i xDrive (2011