the car is a 99 SiR and i'm planning to turbocharge it and run at 7psi for daily driving. i already got a vortech rising rate fmu. will the vortech fmu, stock injectors and stock pump be enough? i was planing to buy a 255lph intank pump to go with the vortech fmu and stock injectors but some people told me it's too much for 7psi. now i'm really confused as to what setup.will the addition of a 255lph intank pump be too rich?

 

No. You will be very lean if you just use the intank.

YOU MUST USE AN INLINE FUEL PUMP WHEN USING STOCK INJECTORS AND AN FMU.

 

I use a gsx pump and no inline and I am fine...so far. But I think he is right, an inline with the fmu is a must to be safe.

 

thanks. anymore???

basically, i'm choosing between these two:
a.) stock fuel pump, stock injectors, vortech fmu?
OR
b.) IN-TANK pump, stock injectors, vortech fmu?

or any other suggestion. please no standalones.

this is for 7psi of boost.


[Modified by _Endless_, 9:03 AM 9/2/2002]

 

c.) Inline fuel pump, stock injectors, 12:1 fmu.
d.) Inline fuel pump, 310cc injectors, 8:1 fmu. AFC would be handy.
e.) stock pump, 450cc injectors, AFC. (The AFC hack.)
a+b are both ****.

 

I tihnk they are trying to say you need an inline pump with the fmu. Just in case you havent figured that out yet.

 

if i choose the inline pump, stock injectors, 12:1 fmu, how much lph should the inline fuel pump be?