Vortech super fmu????

[next_is_10s]

What do you guys think about this??????

Vortech Engineering: Viewing product: Super Fuel Management Unit

 

[talonalex92]

Ooooooooooooooover priced for an AFPR. That is what it is right?

 

[next_is_10s]

Thats what I think it is.
What im wondering about are the ratios.Are these good/safe to run on a dsm?
I know somebody that has one i can get for really cheap(cheaper than a used aeromotive)

 

[talonalex92]

Well, I didnt even really understand what that whole ratio thing meant. So I have no advice on that, Im sure someone else will chime in though!

 

[Locke]

The FMU is used to increase the fuel pressure during boost in an effort to maintain an appropriate AFR on vehicles that have no other form of managing fuel during boost. This is for NT vehicles when adding a turbo, without aftermarket engine management.

Your vehicle's ECU will manage fuel natively, so you should use a 1:1 FPR, in order to keep an acceptable pressure differential between the fuel system and the intake.

edit:
A 10:1 FMU will increase FP 10psi for every 1psi of boost. A 12:1 FMU functions likewise. A 1:1 FPR does the same, increasing FP 1 psi for every 1psi of boost.

An example:
If you were to use a 10:1 FMU on your vehicle, you will have 36.3psi FP at 0psi, and 156.3psi FP at 12psi of boost. Not safe, and the ECU doesn't know about this unexpected rise in FP, so you will run horribly rich.

If you were to use a 1:1 FPR on your vehicle, you will have 36.3psi FP at 0psi, and 48.3psi FP at 12psi of boost. Perfectly safe, and the ECU does know about this expected rise in FP, so you will run as intended.

 

[talonalex92]

The FMU is used to increase the fuel pressure during boost in an effort to maintain an appropriate AFR on vehicles that have no other form of managing fuel during boost. This is for NT vehicles when adding a turbo, without aftermarket engine management.

Your vehicle's ECU will manage fuel natively, so you should use a 1:1 FPR, in order to keep an acceptable pressure differential between the fuel system and the intake.

edit:
A 10:1 FMU will increase FP 10psi for every 1psi of boost. A 12:1 FMU functions likewise. A 1:1 FPR does the same, increasing FP 1 psi for every 1psi of boost.

An example:
If you were to use a 10:1 FMU on your vehicle, you will have 36.3psi FP at 0psi, and 156.3psi FP at 12psi of boost. Not safe, and the ECU doesn't know about this unexpected rise in FP, so you will run horribly rich.

If you were to use a 1:1 FPR on your vehicle, you will have 36.3psi FP at 0psi, and 48.3psi FP at 12psi of boost. Perfectly safe, and the ECU does know about this expected rise in FP, so you will run as intended.

Wow, thats awesome Locke! Thanks for clearing that up for me!

 

[Locke]

Just to add, the factory FPR for turbo cars is 1:1 as well.

 

[pitbull419]

Is that not what this is for, to change the ratio to 1:1? Vortech Engineering: Adapter Ring, Low-gain Ratio (Use with 6Z170-010 or 6Z170-015 for 1:1–2:1 Gain)
Please correct me if im wrong.Im not positive.
Or is that to gain a extra 1:1 ratio over what ever ration that thing is already runnning.

 

[Locke]

Hmm. I can't say I know for sure the purpose of that piece.