if i were to get rid of the gayass FMU and bought a LINK ecu(stand alone) how much boost could i run on the stock injectors? like at 80% duty cycle how much fuel could i flow to match the boost? im goin to get bigger injectors but if i can get a standalone now and wait a bit on injectors....would the injectors work?


kinda worded that all fuxked up but i hope yall understand what im asking....

 

I dont think LINK can raise your base fuel pressure.

 

it can....my friend is doing it on his 2.5RS....he had an FMU now he doest. well i assume since hes doing it, it can. and ist the Walbro 255 creating more fuel pressure than i need?

 

it has the ability to raise injector duty cycle, not raise fuel pressure. fuel pressure is maintained mechanically unless an electronically controlled fuel pump on a returnless system is used.

 

ok so i have to use the fackin FMU....but how much boost can the stock injectors take?

 

Stock injectors are 240cc for you Lancer guys... How much boost can those take? As much as you can throw at them. How much boost can those take safely? Assuming you are hardcored (or stupid, depending on your stance) and run them at 80% duty cycle, you can probably squeeze 5 or 6 psi (this is assuming a non-rising rate FPR). With an FMU, you can probably push more, but I dont recommend FMUs so I wont advise on them.

 

yeah i dont want one....so i do i get something else to raise fuel pressure?

 

bump? how else do i raise fuel pressure w/o FMU?

 

bump?

 

i'm gonna bet on 4 lbs of boost at most with stock fuel system with fuel management. stock injectors should max out at 157 crank hp.

only way to raise fuel pressure is fmu or adjustable fpr. having a larger fuel pump may help but if it's outflowing your fuel system, then it probably won't deliver fuel consistently .

 

Just get larger injectors if you have a standalone. As long as you don't go HUGE you shouldn't have lumpy idle or leak under heavy vac.