anyone knows? it seems that it will eventually lead to the same pipe and eventually the mufflers but why is X-pipe generally more sought after than 'straight pipes '
i feel it makes the exhaust sound different.
it adds some backpressure to it when the 2 tubes converge. usually the m3 NA guys do it ...very popular in the states..but never heard turbo guys do it.
i did it once and took it out...felt it wasnt constructed properly at the exhaust shop.
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