Thread: running lean

ok so i gats the ve in and the mods is

n60 maf
calum basic cu
sr20ve complete
stock exhaust...1.5"
free flow filter


now the prob is that im running 16:1 air/fuel ratio.... i thought that it may be the pump so i dropped in a brand new walboro 255 fuel pump and its still 16:1 can any one sy what may be the cause......same 333 injectors

fuel filter?

brand new from when the build was going up.....but i will double check today.

anymore thoughts

how were the readings taken?

dyno

get an nismo fuel pressure to richen it up..dat should help sum

do u have a air coming in from somewhere, or was the dyno a/f reader calibrated properly, or ur not getting enough fuel, what ur fuel psi at...?

my calum put me at the EXACT same place. 16:1 all the way across. FPR.

what was the outcome...what did u do to compensate....do u advise that i get a fuel pressure regulator???

my a/f was all the way cross also.....

mine is on a turbo application, I got a nismo FPR and bumped it up to 4bar to be safe but I don't have a dyno to know exactly where it's at so for now I'm just driving it super easy. I would recommend a FPR as you can bump up the fuel pressure, but wouldn't let her rip until you get it on a dyno to be sure. better safe than broken...