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      08-07-2013, 11:20 AM   #14
XDEEDUBBX
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Drives: 535I
Join Date: Mar 2009
Location: Los Angelz

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Quote:
Originally Posted by Don Juan View Post
Do you have a tune ? normally if you dont , you wont feel any difference besides the whoosssh sound...with a tune and the added PSI,, the engine needs more air thus providing more HP
Very true, if you have a tune this is a perfect "contributing mod" to compliment the JB4.
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