PROBLEMS: running too rich - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

HS13KLS · 10-11-2008, 12:37 AM

i have a 91 240
KA24de
walbro 255
z32 fuel filter
stock injectors
apexi safc2
innovate wideband
3in intake

my car is just getting ready for a turbo (an sr, so thats why i have the safc2, and the 255)

it used to run just fine until a few days ago.
when i wired in my safc2, i did it quick and never had a problem with it/with the innovate wideband also.
but my only problem now is, all of a sudden its running really rich

i tuned my car to run around 14.3-15.4 ish in town under 50% throttle
and one day i was driving down the road, it spiked up to 18.3-20.2, and it was leaning out.
so i turned my car off in traffic, and just re did the safc and zeroed it out.
then my car started to run rediculously rich. at 8.2-10
so i tuned it down to where i had it at idle. still was the same. after i maxed out the safc2 at -50 it would idle around 12.2 (keep in mind it USED to run at 14.3ish)

anyways now it just runs shitty, and super rich, i re did ALL the wires for the safc and wideband and head shrunk everything. still nothing. i dont get it.
anyone have a suggestion?

10-11-2008, 12:37 AM	#1
HS13KLS Zilvia FREAK! Join Date: Aug 2006 Location: Illinois/California Age: 35 Posts: 1,114 Trader Rating: (13) Feedback Score: 13 reviews	PROBLEMS: running too rich i have a 91 240 KA24de walbro 255 z32 fuel filter stock injectors apexi safc2 innovate wideband 3in intake my car is just getting ready for a turbo (an sr, so thats why i have the safc2, and the 255) it used to run just fine until a few days ago. when i wired in my safc2, i did it quick and never had a problem with it/with the innovate wideband also. but my only problem now is, all of a sudden its running really rich i tuned my car to run around 14.3-15.4 ish in town under 50% throttle and one day i was driving down the road, it spiked up to 18.3-20.2, and it was leaning out. so i turned my car off in traffic, and just re did the safc and zeroed it out. then my car started to run rediculously rich. at 8.2-10 so i tuned it down to where i had it at idle. still was the same. after i maxed out the safc2 at -50 it would idle around 12.2 (keep in mind it USED to run at 14.3ish) anyways now it just runs shitty, and super rich, i re did ALL the wires for the safc and wideband and head shrunk everything. still nothing. i dont get it. anyone have a suggestion?