RR Kit and FASS

06F250powerstroke · #1 (**permalink**) 06-10-2009, 01:44 PM

I bought a RR kit from ITP and a FASS 95GPH now im hearing that you dont need a RR kit if you get a FASS? Is there any truth to this? also im upgrading to 155cc and a II stage 1

***bulldog84*** · #2 (**permalink**) 06-10-2009, 01:49 PM

SamW · #3 (**permalink**) 06-10-2009, 02:02 PM

Not really nessisary as you really only need one regulator and FASS has a built in one. I dont have an RR in my truck i just have the stage 1 and crossover line from trusetd in it but I dont think it would hurt anything if you already have it to install it. Alot of guys have the RR system and a FASS.

**JAcktheBear3** · #4 (**permalink**) 06-10-2009, 02:13 PM

A Fass System is already regulated

***bulldog84*** · #5 (**permalink**) 06-10-2009, 02:23 PM

look up "RR or FASS?"

**jasonschwenk** · #6 (**permalink**) 06-10-2009, 02:25 PM

The RR is going to regulate the fuel through the ends of the fuel rails. True the FASS system is regulated but it only regulates the pressure trying to keep it constant. The RR is not only designed to maintain the pressure to the injectors but it will also allow proper volume to flow to the rear injectors which can still be starved of fuel with only a FASS system

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