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W221 S320CDi Performance Box - 235hp to 311hp - Worth It or not?

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Old 11-04-2014, 03:52 PM
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2007 Mercedes S320
W221 S320CDi Performance Box - 235hp to 311hp - Worth It or not?
Hi all


Can Anyone please give me advice as to whether this kind of upgrade works and is it safe ?


http://www.racechip.com/chiptuning/m...73kw/index.php


Thanks.
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Old 11-05-2014, 07:35 PM
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s320
if it connects to diagnostic port its real however I see a need for more fuel,unless it expands the injector opening.If it connects by splicing into a maf sensor its junk.
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