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      08-06-2015, 08:18 PM   #3
Josparky
Second Lieutenant
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Drives: 2011 E92 M3; 2012 E88 135i
Join Date: Aug 2015
Location: Sydney

iTrader: (0)

bummer...i just bought the stage 1 from the US...

Would you know if there's any noticeable difference in power between stage 1 and JB4....assuming everything is stock? I know on paper JB4's got more horsepower but just wondering if the difference is actually noticeable and worth me changing...
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