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      07-13-2014, 09:08 PM   #22
modkrazy
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Drives: m3
Join Date: May 2014
Location: tx

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Doesn't sound bad under load, but the first few thousand RPM sound like something is rattling itself apart in the exhaust. Non M Perf was the same. Anyway, this is an improvement, but I don't think worth 8 thousand dollars. The main flaw of the car's sound (start-up, idle, low revs) are not addressed at all. Definitely not the songbird marvel of an engine we got last two times, but can't deny the performance.
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