FiTech EFI system

Well that is one of my complaints about FiTech, too many places to get tech info. I too was skeptical, but I did find an official post from them stating to have a line from the FCC port to vacuum. I tapped (T'd) it into the vac line to the reg on the side of the throttle body. The other port on the TB is now used by my vac advance. The engine vacuum will reduce the pressure at idle as an other means to reduce fuel pump deadheading at idle and overheating, also they have the pulse width volts to the pump reduced to 40% to reduce pump heat and cooking the fuel in the canister.

FYI,

Marion

UCUDANT said
So ported vacuum? If FiTech states it, where did you find this information? Previously they stated these ports were only used for power adder applications.

This is all I could find under


61 Q&A's on “Instructions for Go EFI Systems”


"Kyle November 15, 2016 at 10:48 pm Reply
I just got your 30004 Power Adder kit and noticed a vacuum line from the FPR to the side of the unit. I’m not planning on boost or spray right away, should it be open to atmosphere or leave it connected how it is?"

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    Bryce - FiTech Tech Pro November 16, 2016 at 7:51 pm Reply
    This is an update we are doing now. Leave it hooked up.

Jim November 23, 2016 at 7:04 pm Reply
looking at the passenger side of the fitech, the chrome vacuum port . What is that for? should it be hooked up and where to?

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    Bryce - FiTech Tech Pro November 23, 2016 at 11:40 pm Reply
    As an update we are now running this port (fuel pressure regulator) to manifold vacuum.

View attachment 1715050401
Bryce - FiTech Tech Pro January 6, 2017 at 7:48 am Reply
I recommend the use of vacuum on the regulator as it lowers fuel pressure under a low load situation. This will help the EFI adapt to your engine better.
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