queez

hey guys ... doing the hack with 440rc injectors. i have the fuel pressure set around 47psi wth no vacum.. and leaned out 39% - 40% , but i'm still running very rich.. am i doing something wrong??

civperc

have you checked out http://www.thedropshop.tv/vafc.htm ?

Daniel

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by queez &raquo;</TD></TR><TR><TD CLASS="quote">hey guys ... doing the hack with 440rc injectors. i have the fuel pressure set around 47psi wth no vacum.. and leaned out 39% - 40% , but i'm still running very rich.. am i doing something wrong??</TD></TR></TABLE>

might try -45%. i was running -40% but when i hopped on the dyno, the engine was running VERY rich. when the tuner leaned it out to -45%, the a/f rose to about 12:1.

vha27

using dsm 450's at about -35 all over, fpr set at 38 psi, still running rich
id suggest turnig down the fuel pressure to at least 40 psi

Type-GS-R-Turbo

are you running an FMU? at full throttle you should run rich btw? are you putting out black smoke?

I'm running RC 440's aswell with a V-AFC and GM 3 bar map on 15 lbs. Works great with an FMU.

queez

i am not running any fmu.. i'll try lowering my fuel pressure..
but i guess since i am running this rich without installing my warlboro fuel pump.. is it a good guess to say i might not need the fuel pump at all??

scttydb411

take it to a dyno tuner with wideband. they will adjust it. my settings range from -46 to -49 and still a tad on the rich side.

swlabhot

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Type-GS-R-Turbo &raquo;</TD></TR><TR><TD CLASS="quote">are you running an FMU? at full throttle you should run rich btw? are you putting out black smoke?

I'm running RC 440's aswell with a V-AFC and GM 3 bar map on 15 lbs. Works great with an FMU.</TD></TR></TABLE>

Any probs or issues in installing the 3bar GM to the stock ECU??

NOSED_CRX_VTEC

What makes you think your running rich?

queez

i have an auto meter a/f meter.. it used to run stoich , but now it is pinned rich, and i'm going through gas like crazy

zojirushi

if your using the afc, make sure all the settings are right, eg: sensor is pressure and 6 in and 6 out.

NOSED_CRX_VTEC

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by queez &raquo;</TD></TR><TR><TD CLASS="quote">i have an auto meter a/f meter.. it used to run stoich , but now it is pinned rich, and i'm going through gas like crazy</TD></TR></TABLE>

I have the same setup as you but i'm using 450 cc inj and a fmu and stock pump.
Got the car on the dyno and I was very lean.
My auto meter a/f gauge was saying very rich.
I'm now going to get a 255lph in tank pump and a b&m fpr.
Get it on the dyno and find out whats wrong.

9200RPM

i have a walbro 250 and the pressure from the walbro is too much for the B&M to hold back...ive put two of them on there....

Type-GS-R-Turbo

nope. There is a setting in the Apexi that converts the 3 bar signal to the stock honda signal. Read my thread on this exact topic:

https://honda-tech.com/zerothre...30825

VTC_CiViC

Check the plugs.. best way to know what the hell is going on.