Yeah, thats all wrong...
Remember, an FPR closes to increase fuel pressure (think of water flowing in a hose, you cap the end of the hose, the water pressure in the hose increases).
The FPR's job is to increase or decrease the fuel pressure in the rail in relation to atmospheric pressure, up to the point where boost is made. After that, most FPR's increase fuel pressure in a 1:1 ratio, or 1 PSI fuel pressure increase for 1 PSI boost increase.
An FMU takes over where the FPR leaves off, by increasing the fuel pressure in greater ratio's per PSI of boost. So a 5:1 FMU increases the fuel pressure 5 PSI for every 1 PSI of boost.
Make a little more sense?
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Okay, so why would you really need the FPR, cause the computer settings control the fuel out of boost....Or is it only to dial back larger injectors?
still the computer can on do so much with the fuel control, its either to turn down the fuel pressure for larger injectors or if its a rrfp it raises the fuel pressure per psi of boost
saturn 5speed turbo 8psi
93' z24 grand prix turbo 3.1 swap, crane 272 cam, 3100 hybrid top end swap, t04b turbo
in-line fuel pumps? any comments about them?
instead of doing a intake fuel pump, can you just add a in-line pump and achieve the same effect?
...
Eliot wrote:Great info Ron. This thread should be !!!STICKY!!! and added to the FAQs.
Also I will add this info too.
2.2 and 2200 Injectors:
-99 --> 17Lb/Hr (178.5cc/min) Low impedance (2-6 Ohms)
PoundinFire wrote:95-97 2.2 injectors are high impedance, don't know about any of the others though.
which one is correct? are the 95-97 2.2 injectors low impedence or high impedence?
Quote:
which one is correct? are the 95-97 2.2 injectors low impedence or high impedence?
The 2.2 OHV side feed injectors are 16 Ohms each.
2200 top feed injectors may be high or low impedance.
-->Slow
If the FMU has to come after the FPR, where exactly would I put it on my car? It is a 02 with the 2.2
I don't want to sound dumb, but thats probably gonna happen anyway, is the FPR on the return line, or the feed line, and exactly how would i hook up the FMU?
Thanks
for injectors will an injector from a 2.3 HO fit in my 98 2.4?
When turboing a 2200, with an inline fuel pump, is it alright to use a fixed rate FMU (12:1). I am only going to run 8psi of boost, and keep the stock injectors.
Does anyone have a reccommendation for injectors, and the resulting level of fuel pressure I should use to compliment my 8psi of boost?
do u have to have a fuel management unit or will a fpr work only running 6/8 psi
If I have a stock fuel pump but its brand new would just adding a different injectors work well for me- not looking to pound the pavement right now just want engine to run properly
Ok I am going to put somewhere between 8 to 10 psi on my eco I am going to buy the begi fmu, what do you guys recomend for injectors and what else is a must for fuel system upgrades...
Ok, I wanted to know where will the Fuel Management Unit vacuum line hook up to ? If I installed Fuel Management Unit then where will I hook up vacuum line to ? Fuel Management Unit to Throttle Body ? or Fuel Management Unit to Fuel Regulator ? That I want to know. Let me know. Thanks
And 1 more thing that I wanna ask. I wanted to know will that be fine if I run my Supercharger with 2.7 pulley thats about 5 to 7 psi of boost and I put in Fuel Management Unit 8:1 will that be good enough for my car ? Let me know. Thanks
