Quote:
Originally Posted by Boosted_8
Best thing about the M550i is that it sounds waaaay better than the M5. This manifold will undo that fact due to the runner paring.
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ironically this is what I'm trying to achieve
if the manifold make the car more quiet I can add downpipes without an increase of rumble,
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Daily: G30 M550i, Bluestone, JB4, 1 step colder plugs, 6WB retrofit
Winter Beast: Audi S4 4.2L V8, Supercharger, brakes, suspension & exhaust mods
Wifes': F15 M50d clone, DUDMD tune, WMI, MPBK
Gone: E92 335i N54 468rwtq