Should I invest in this?? Fuel Rail *PERRIN* scion fuel rail?

http://cgi.ebay.com/ebaymotors/ws/eB...5652951&rd=1,1

 

if yours gonna go FI yeah it would help but not for a NA application

 

Sorry, I am not sure what FI and NA is. I have a stock Exhaust and Header right now with a new Injen Cold Air Intake. I wanna put in the Headers and Exhaust but am not sure what ones.

This little device I hope will make some HP difference in general but it's expensive I think. Why I wanna know if it's worth it

 

dont really need it without a turbo or supercharger setup, and you can find it for less than that as well..

 

Thanks yah I just figured out the "FI" duh! ok, cool than I can save my cash for other xA toys