Quote:
Originally Posted by ntg44
Here’s my contribution: equalized lengths merged into a single pipe, single exit exhaust. Sounds 2JZ down low, and S54 up high:
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Had a chance to compare exhaust notes on my last weekend cruise with an M2 competition (stock exhaust), and 2 S54 E46 M3's both with
headers + exhaust.
In person, my exhaust sounds almost like a combination of an N54 + headered-S54 downlow, midrange, and uptop, only more muffled and with a lower octave overtone (S55 OE muffler challenge). S54's sort of sound like a grumbly 6 cylinder down low with euro-headers (or any headers for that matter), but they both sound really smooth and good in the mid-high range, except they can rev to 8,000rpm
I wish the equal-length pipes paired with the OE muffler would produce more of a 2JZ noise down low like your set-up, but the design/internals of the muffler wasn't made to accentuate that noise given how it was designed around cancelling out the inherit rasp that the OE unequal-length design naturally induces (basically its designed to muffle out higher notes).