Got my wideband hooked up today and decided to keep to boost low to start. Well good thing I did that because it started to go 14:1, 15:1 up top after about 5000. For fuel, I am running two secondary 450's. Now mind you that the injector controller that controls these injectors was on the richest setting. This shouldn't be- as I know this is more than enough fuel to support my needs. I also have a walbro 255lph in tank pump. I know both of the injectors are firing. Do you guys suggest maybe I need an AFPR or maybe the injectors are clogged and not firing to their full potential? Maybe the fuel pump isn't functioning properly? I checked both injectors and both are firing.
z24 aint afraid of no ecotec
Scott wrote:Do you have an FMU?
I was just going to say that... sounds to me that you have everything but the rise of the fuel.. had the same problem with mine. but I was running more leaner than you were. I was running close to 18:1 very dangerous.. now I'm running 12.5:1 with a 10:1vortech fmu
**changes are here**
with EIC he doesnt need a FMU? I thought that was the whole purpose of the controller that controls these 2 huge injectors?
But are the injectors getting enough PSI to work as they should? I had this question a while ago as well, but it was theoretical.
Does it go faster?
I figured that the extra controller opens them up longer or whatnot and fuel pressure isnt a issue with them, as long as there getting the base 43 PSI or arounds. But regardless your still running lean so maybe the cure all is a FMU, Then your stock injectors might clip unless theres a way to bypass from raising pressure to stock injectors ...i dont know... just giving some ideas to look at
Do you know what your current fuel pressure is?
<img src=http://hometown.aol.com/yogiandbooboo7/images/french.jpg>
Shifted wrote:Are you using the return line or the feed line to supply fuel to the 2 extra injectors?
Feed..Cmon anyone have any more suggestions? Would a afpr help?
z24 aint afraid of no ecotec
Got a buddy of mine that has a 2.2 dodge turbo and for a little while, he was running lean also. Turned out that at the track, his brand new fuel pump wasn't delivering(also the walbro 255lph pump) and gave out. Get a pressure gauge and hook it up inline with the pressure side and see what pressure your producing.
T04B V-trim baby.....Time to Open a Can of Whoop A S S !!!
mess with the extra injector settings. my buddy had that set up with the two extra injectors and he could control them. he always ran pig rich with them and had the walbro fuel pump.
if i had to guess them injectors arnt working, or giving enough fuel. cuz i am sure u are running the 4 stock fuel injectors and them alone wont be enough fuel and that is why u are going lean, cuz the only fuel u are getting is from them.
could be the fuel pump, i doubt it.
good luck, i have no real experience with the extra injector set up, just from what i seen with a friends car. i have the walbro pump and that is fine and dandy.
What EIC are you running? I was using the MF2 a while back. I could get plenty of fuel. I was using a SunTURD turbo MAP, two bar.
O noes!
Greddy Rebic. Car has been stalling out at random the past few weeks and wouldnt start back up until the next day or something. I changed the fuel filter today and it still ran super lean. Tomorrow I will change the pup (walbro255). Maybe it is @!#$ting out and that is what is causing the car to stall.
z24 aint afraid of no ecotec
wow that is lean im running stock injectors with the duty cycle upped to 80 and even at 5psi it only goes to 14s on afr
1989 Turbo Trans Am #82, 2007 Cobalt SS G85
good luck and keep us updated.
