NEW Muse Motorsports External O2 Dump!
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From: Hudson, MA
You don't need a tune, but more gains will be realized from a tune. This increases mid-range/top end flow which in turn puts your car in a slightly higher load bracket and may affect your overall boost curve due to the lack of back pressure on the wastegate size.
Thanks for the heads up! I'll definitely pick one of these up if I come across some spare change =P


