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1. • Member

   wadeshanley

   Post Count: 1

   Likes Received:0

   anyone have any experience with the Turner Sprint Booster? is this worth the money? Any other recommendations for performance tweeks? I've had my 2007 Z4 M roadster for about a year. Im looking at various performance improvement options.

   wadeshanley, Mar 25, 2012

   #1
2. • Member
   • Staff

   steven s

   Post Count: 2,482

   Likes Received:110

   I always suggest the first performance mod to be the driver.
   Do you autocross?

   steven s, Mar 25, 2012

   #2

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