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      02-03-2013, 06:53 PM   #1
insane79
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Drives: E90 lci
Join Date: Apr 2012
Location: Earth

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HP decrease after installing BMW PE?

Hi guys,
I just ordered my bmw performance exhaust for my 325i(2.5ltr 160kw)
its only the back box & not the mid pipe as its an e90 lci, i read online that only installing the back box will give me lesser performance? is that true anyone here with a 320/325/330i installed only the PE back box felt decrease in HP?

Thanks..