Not making good power

[Chris98vobra]

thanks for the advice! when you say replace the stock lines, how far back do i need to take them? all the way to the tank? or just the initial ones coming off the rails? i've looked at some of the aeromotive products, and one of the systems (900 bucks) contains rails, regulator, and "lines" but doesn't really specify how far back the lines cover.

The real question is what are your goals? If you are happy at your expect power level then just replace the pumps. You don't need new lines or rails. If you want to go over 550 rwhp or so then you should replace all of those to be safe, though I know of folks who have made it over 600 rwhp fine.

I replaced only my feed and then used my old feed as the return. It works well and simplified the process.