well i installed my lc1/xd16 gauge combo. it is reading very rich 11.7ish on idle. and when under full boost its very lean 12.5ish in third gear... any ideas what i should do? i have the lex/550/walbro with a afpr and safc2. my fp is at 32 with vac line on...(40ish w.out vac line)... thanks for the help
new wideband user
- Thread starter 808mkiiisupra
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808mkiiisupra said:
12.5 is not lean.. it's rich and you wouldn't want it much leaner than that under boost.. maybe even 11.5 WOT.. 11.7 is rich on idle. Search the forum for FP I can't remember what it should be.. My car is down for a rebuild or I would check it for you.
hey guys thanks for the info....im going to calibrate it again tomorrow. i kinda meant the 12.5 is lean under full boost (wot) gotta check out my fp also thanks guys any more info is greatly appreciated...
well i re calibrated the lc1 and the af is about 20.7ish in normal air....adjusted the fp to about 33psi without vac line connected but plugged. now the idle af is about 12.1-.4 at 700rpms....the vf volts is 2.2volts....would this seem normal for the 7m with my mods?
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if the Vf is 2.2 that means the ecu is making very little correction. it should be making a ton of correction since the a/f at idle is 12.1.
are you using a stock 02 sensor or simulation thru the wb output?
it could be your stock 02 going bad. when they start to fail they usually go on the rich side for safety. that would have nothing to do w/ wot tho. that sounds to be seperate. and lowering base fuel pressure prob made that worse.
are you using a stock 02 sensor or simulation thru the wb output?
it could be your stock 02 going bad. when they start to fail they usually go on the rich side for safety. that would have nothing to do w/ wot tho. that sounds to be seperate. and lowering base fuel pressure prob made that worse.
yea im using the stock 02 sensor...i really dont have a good voltmeter but it reads 4.9volts or so but doesnt move or scan up and down at all. maybe its the o2 going bad and i just gotta adjust to the higher rpm with fp?
well mine starts off lean 14ish when the boost is climbing then when at full boost its around 11-12ish....at idle its really rich at about 11.7 any ideas?
thats fairly normal for it to be on the lean side off boost and going into boost, then ramp down on the rich side when boost is coming on. sounds like what yours is doing.
what i would do for the idle is swap to a known good 02 sensor and see if that changes anything.
what i would do for the idle is swap to a known good 02 sensor and see if that changes anything.