Which is louder: Stillen or Nismo Exhaust?
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There no questioning Clear Images Exhaust for loudness. At out Z club dyno meet sat. their system basted all the stillin and borla systems. When you put the trottle down everyone knows this car means business.
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Originally posted by thunder0880
How much does the topspeed system claim in horsepower? Is it a true dual?
How much does the topspeed system claim in horsepower? Is it a true dual?
I have the 3" version and I gained 8-12 RWHP with no other mods.
![](http://www.topspeedauto.com/ProductCart/pc/catalog/exhaust/cbns350z-L.jpg)
Topspeed Pro-1 Exhaust webpage
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