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      12-18-2012, 09:01 PM   #3
ErvGotti
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Drives: 2008 135i 6MT
Join Date: Jul 2010
Location: Aviano

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2008 135i  [6.00]
It's pointless to add downpipes and an intake on this car or any car for that matter without a tune. The stock parts are more than adequate for the stock tune. You will not see any added power with just changing out the stock parts without tuning, hell you'll probably lose power installing an intake without tuning for it.
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