Quote Originally Posted by 350ZFTW
My exhaust is raspy a fuk above 3k any way so.Did it make a difference w the way it performed?
gained 6hp to the wheels but lost 6lbs of tq. If I were to do it over again, I'd go highflow cats. Not to mention the install was a huge pain in my ass. If you can get test pipes for cheap and you dont mind spending some time installing them, by all means, go for it. Thats pretty much why I did it.

As far as the power being noticable, yes. I did notice less power down low, but the engine also seemed to "breath" much better from 4500 up to 7K. Once I went back to factory, it felt very choked off up top.