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Thread: running lean

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Posts: 1-10 of 13
2008-04-27 05:14:26
#1
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
2008-04-27 07:27:59
#2
fuel filter?
2008-04-27 12:18:00
#3
Originally Posted by Danja
fuel filter?


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

anymore thoughts
2008-04-27 15:25:35
#4
how were the readings taken?
2008-04-27 17:43:46
#5
dyno
2008-04-29 04:05:52
#6
get an nismo fuel pressure to richen it up..dat should help sum
2008-04-29 04:47:51
#7
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...?
2008-04-29 05:02:44
#8
Originally Posted by THOR
anymore thoughts


my calum put me at the EXACT same place. 16:1 all the way across. FPR.
2008-04-29 14:42:03
#9
Originally Posted by nathan2284
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.....
2008-04-29 15:43:34
#10
Originally Posted by THOR
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...
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