Isr wrote:350z NISMO Cat-back. not dual exhaust, ie. less power compared to say.. Stillen
Not necessarily. I'd think the same, but I talked to Z1 about this and they told me based on their dyno results they've found the best results from the Nismo exhaust (talking about Z33, not Z34). At least compared to the HKS, not sure about Stillen. They said they hardly saw any gains on the HKS, which is "true dual" (I hate the term because so many Alabama rednecks use it). Maybe it depends on the car? Sorry to say but I'd still get the HKS if I had a Z33. Just sounds soooooo good.