I currently have the HKS setup on my Z. Bu ti've been thinking about the Greddy Evo TT setup. I know the piping is defintely larger than the HKS Ti. Would i benefit from switching to greddy or should i stay with what i have now and tune it with unichip? Any inputs would be appreciated. No, i'm not going FI.

 

The GReddy EvoTT is meant for FI applications. So if you plan on staying NA, the EvoTT is a bad idea.

 

It is basically overkill for n/a use. Stick to the HKS and buy a UTEC.