For a N/A Z is there any advantage to a TD system (like Borla) or is the single exit system (like Nismo) better? I'd perfer a little deeper growl, NO DRONING, and am curious as to if either method improves performance.


Thank You

 

In my opinion a true dual will always yield a greater horse power increase due to each three sided exhaust manifold having its own single exhaust.. there is a lot more restriction when you combine both exhaust manifolds down to a y pipe leading to a midpipe/muffler. As for deeper growl its really just your preference seeing it that one of the loudest exhaust out there for the z is the RS-R which is a y-pipe back and not a true dual. Hope this helps a little.. try the sound clip thread and pic out a tone you like.