Im not going into details on the subject i just need a simple answer honestly.
Is a low base fuel pressure a bad thing? My base pressure as of now is 20psi and stock is 57, I have it that low for a reason though so dont worry about that. My AF at idle is 14:7 and 11:5 at WOT, but that low base pressure conserns me.
Is a low base fuel pressure a bad thing? Can it hurt anything at all?
no, as long as your in boost a/f;s are fine, you are fine
LE61T PTE6262 Powered 
Thanx Phil!
Now get ur car running foo!
id liek to know why you are doing this, its generally not a common practice.
ccfab wrote:id liek to know why you are doing this, its generally not a common practice.
Those are the details I dont feel like going into.
what fun is that. is it more j body secrets? everyone here thinks they got a hot secret.....
The PCM can compensate for the low fuel pressure with a longer pulse width. But, with a low base fuel pressure you may not get proper fuel spray and atomization out of the injectors. Which may cause fuel puddling. Just something to think about.
SPDDMON wrote:The PCM can compensate for the low fuel pressure with a longer pulse width. But, with a low base fuel pressure you may not get proper fuel spray and atomization out of the injectors. Which may cause fuel puddling. Just something to think about.
Ding, ding, ding. You definitely don't want to drop too low on FP, not sure how low is too low though. Without you saying what else you've got for fuel control, hard to give any advice on how to improve the situation.
15.3 @ 89.97mph, 14's on the way?
once again not asking for advice. simply asking about low fuel pressure.
And ccfab, I have no secret just no need to tell you what the hell im doing. ok with you.
Opionion: I would keep the fuel pressure around 30 - 40p.s.i. Reasons puddling(SPDDMON) which can lead to improper combustion in the cylinders. I had a friend with a turbocharged saturn who went through two sets of factory pistons due to Detination. But this is only my opionion and I am not sure on your setup or the methods you have available for tuning.
"Boosting a z..... one step at a time."
Ok fine ill still the details so i can be shanked by everyone
.
I maxed out the injectors that came with the GMPP supercharger package, Started running lean at WOT. Checked the pump and fuel pressure and all was fine. So I added a set of ford #39 injectors so thats what a 2lb increase?! Well now I've had to lower the fuel pressure via Aeromotive AFPR to get a nice 11:5 AF at WOT.
No I do not have HPT, No im not getting it anytime soon, So all the HPT natzis keep your comments to yourself. Pleanty of people were boosted before HPT and with out a standalone and did just fine.
Lets here how crappy my setup is...
it isn't if it works well good for you....
but then again I am a HP Tuner nazi
LE61T PTE6262 Powered
QBE (The Boosted One) wrote:it isn't if it works well good for you....
but then again I am a HP Tuner nazi
I dont know why I love you Phil, Even if your a nazi
I'm not sure what the eco GMSC injectors are, but the 2.4 comes with 30lb/hr injectors, so that would be a 9lb/hr increase. Jump in and let me know if the eco's kit came with bigger injectors, but that doesn't sound like too bad a fuel system, HPT or not. Do you have your own WB, or are you going off dyno results?
15.3 @ 89.97mph, 14's on the way?
I want to be a HP Tuner nazi....::pout::
the 20psi means the fuel pump doesnt have to work its ass off
the only down side is it doesnt give you the tel tale signs when it goes bad
and you know ive been running my cav the same way for around a year , and have not had any issues , but im at 30 psi
like i told ya , if your not haveing any problems off boost , and no transistion problems from off boost to on boost , and back the other way , then you should be ok
you migh wanna try raising the pressure up a few psi , then driving it under boost and off , for a day and see if the pcm adjusts the maping and keeps it in the same afr range
mine will show a drop into the low 10's when i go from no boost and into boost , then comes back up to the mid 11's
sounds just like mine bro
hey me too..... I'm using an fmu......
just for the first milisecond after you floor it ....
Lee
JDM Civic Hatch
Status: Parting Out Turbo Kit....
14.224 @ 102.01MPH @ 5.5psi.... 2.3 60'
Next: Civic JDM B16a2 w/GSR LSD Turbo - Goal 300whp 1400lbs...
Hey Aaron! Just remember you have a good buddy to the north that is a HPT Nazi Expert!
SOLD!!!!!!!!!!!!
