Pleased with the results. My hope was that the sound would increase a bit and not be too loud. That's what I got, but have no way to quantify what that means. Increases in hp and torque were not part of the goal.
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2000 Boxster S
2010 Volvo XC60
2011 GMC Denali HD 6.6L (sold)
2008 Cayenne S (sold)
1989 Targa (sold)
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