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OE e46 M3 exhaust system

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Makes for some very interesting reading into the challenges faced in creating a performance exhaust for mass market.

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There is a stunning level of detail in the M3 E36 & 46 headers shame they are buried in the engine bay. The science obviously works as well because these produce great results compared to a "stock" M52 - 54 style exhaust.

Anyone planning to do headers should look at how these are proportioned.

P.S the E46 ones look shorter in the primaries compared to the E36 ones would suggest they are designed to work at a higher RPM to peak the power output a bit more. Given that the E46 M3 pulls like a train from lowish RPM theat is no mean feat.

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Well said Ron! Will have some of that precsion science for supply for E36 M52 in new year.

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a very awesome article. thanks for that. but had a problem with my exhaust because the manifold on my car get cherry red? isn't the exhaust a harmful one if its the case? and addition to that can i reuse exhaust manifold gaskets? thanks in advance peeps. ^_^

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