return fuel system/FMU

[tfnaaf]

Ok so im starting to move forward on custom turbo and im starting with return fuel system. Maybe im not reading it correctly but the Aeromotive regulator States 1:1 ratio for boost, and im fairly certain that a higher ratio of 10:1 is required. Will i aslo need something similar to the vortech FMU. From what ive read the Vortech FMU dosent have adjustable pressure regulator does it for when not under boost? And after further reading it appears that SUPER FUEL MANAGEMENT UNIT (SFMU) Can take the place of the regulator and FMU Has anyone ever used the SFMU before? And any comments/suggestions? http://www.vortechsuperchargers.com/.../fmu_sfmu.html

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[tfnaaf]

bump, anyone have any info on the SFMU ?

[meseetree]

i haven't heard pf anyone on here using it on 7thgens but i've seen it used on high boosted civics before

[opto_isolator]

The regulator increases pressure on a 1:1 basis (ie, for every PSI of boos you run, it will compensate for). This is essentially the same thing that your stock setup does - the in tank regulator will keep the relative pressure around 47 psi.

If you use the FMU, for every PSI of boost you run, the regulator will increase fuel pressure 10 PSI! This means that you are essentially forcing a lot more fuel through the fuel injectors than was intended. You can see that when you start to run high boost that your fuel pressure will be extremely high - which can be dangerous if not done properly.

This is why its better to get a regulator and run larger injectors - the FMU is a half-ass solution....

[tfnaaf]

So will the SFMU work better than or = to a seperate regulator and FMU? I understand that the larger injectors would be ideal. I guess im looking to go with KNOWN parts that will work then later possibly go to different injectors and such. Im just thinking that the SFMU would simplfy the fuel system instead of seperate regulator and FMU.