Originally Posted by Z Stig

I installed my Z1 plenum a few weeks ago and noticed an immediate difference! Both in sound and performance. I'll be adding my Z1 tune tomorrow, so I'll be able to maximize my mods to this point. That and the suspension mods will almost complete my build. I say "almost", because I'm not sure I'll ever be done.

Originally Posted by F.I. Inc.

Yes, they are Tony approved! Frank, when I get around to it, I may put your pipes into production. We will call them, "The FP" option.
-Tony