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Richard Crofts · Nov 5th, 2007, 04:29 PM

webb motorsports did an 11% (which at the time was meant to duplicate the reduction created by the BMW JCW pulley compared to stock. Its believed the JCW is somewhere around the 12% mark

Nov 5th, 2007, 04:29 PM	#5
Richard Crofts THE STICK Join Date: Feb 2003 Location: Worcestershire WR15 Local Time: 01:46 AM Posts: 3,174 Offline	webb motorsports did an 11% (which at the time was meant to duplicate the reduction created by the BMW JCW pulley compared to stock. Its believed the JCW is somewhere around the 12% mark