View Single Post
      02-09-2013, 06:20 PM   #2
PR3CI5N
need4speed
PR3CI5N's Avatar
United_States
14
Rep
1,234
Posts

 
Drives: 2010 E90 M 335i
Join Date: Jun 2010
Location: West Coast

iTrader: (15)

They work pretty well but over time they'll turn your spark plugs orangish/yellow. To be honest though octane booster is old news, try a few gallons of E-85 and you'll really feel a difference.
__________________
N54