Thread: RPI Exhaust
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      11-25-2012, 10:59 AM   #7
jrainlay
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Drives: 07 Z4 M Coupe
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Location: Scottsdale, AZ USA

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Compare these two images... The first is a dissected OEM (without fiber stuffing) that v3.2mc posted recently on the exhaust forum:

Contrast this with the RPI straight pipe design:

In addition to the 30 lb weight reduction, RPI claims a 7 HP gain, although I've never seen any before/after dyno results to substantiate this.
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Mods: MStache2, stubby, CF plate frame, CF spoiler, CF grills, aero skirts, reflector/lite deletes, CSLs, H&R coilovers & 12mm spacers, Rogue RSMs, RPI exhaust
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