What exactly does a performance fuel rail do?Like I know it is designed to carry large amount of fuel compared to the stock fuel rail, but will it help me out alot if after I go forced induced with some DSM 450's or is it not worth the cash?

 

With dsm 450's youre not going to be making an enourmous amount of power.

You should be fine with the stock fuel rail.

 

stock rails can support 400-500whp easy. aftermarket ones sure do look pretty though.