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The BMW Range
3 Series
E46
Aftermarket exhaust
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<blockquote data-quote="Devillian" data-source="post: 663774" data-attributes="member: 22102"><p>Just be wary for the headers... quite a few of them aren't designed properly for performance. They will give you a good sound but you would actually lose power.</p><p>Headers should only be upgraded when you vehicle goes past a certain threshold of air flow. If you consider supercharged engine running 7-10PSI boost still recommend the stock headers, it gives you a benchmark of how much more air you need to be flowing before the headers actually start to be useful.</p></blockquote><p></p>
[QUOTE="Devillian, post: 663774, member: 22102"] Just be wary for the headers... quite a few of them aren't designed properly for performance. They will give you a good sound but you would actually lose power. Headers should only be upgraded when you vehicle goes past a certain threshold of air flow. If you consider supercharged engine running 7-10PSI boost still recommend the stock headers, it gives you a benchmark of how much more air you need to be flowing before the headers actually start to be useful. [/QUOTE]
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