Performance OEM and Aftermarket Engineered Parts Global Leader In 300ZX 350Z 370Z G35 G37 Q50 Q60 - Z1 Motorsports
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I have a custom X pipe 2.5 inch diameter exhaust with stock headers on a 40th Anniversary 370z and man do these wake the car up. The difference from a cat to going catless is night and day. They're loud / raspy when I cold start the car especially in the garage, even with the door up. After thirty seconds to a minute it will quiet down dramatically. Your neighbors will hate you if they don't already. I have a manual so I can't speak for the autos but with driving, as long as you shift between 2.5 - 3k you won't annoy anyone after the cold start. When heavily accelerating or hitting the twisty back roads you'll for sure be heard from miles away.

Rated starstarstarstarstar by James Dawson
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