apexi safc11
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Chicago Realtor
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From: chicago
apexi safc11
i need help from all the tuning geniuses...i am thinking about getting the safc11 but i heard that if you want to tune it yourself you obviously need an air to fuel gage but i also hear that they are not accurate on our car because we need a wideband 02 sensor. forgive me for being dumb but what the hell is a wideband or narrowband o2 sensor. and where can i get one. also if i have a air to fuel gauge and wideband 02 sensor how does that all work with the apexi unit...any help at all is greatly appreciated , thanks guys...oh, and gals!
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From: ________
Wideband02 sesnor allows you to tune your car at WOT with an a/f gauge ACCURATELY. If you were to connect an a/f gauge to your stock 02 sensor, it would really only serve 1 purpose: To let you know when you enter closed loop. In other words, a/f gauges with your stock 02 are worthless. (unless you like looking at crosscounts). Stock 02s are on your car to keep you at a 14:7 a/f ratio. It determines rich/lean by voltage
Widebands ARE accurate and can be used to adjust a/f ratio at WOT. They give you actual a/f ratio and are not a guesstimate
Widebands ARE accurate and can be used to adjust a/f ratio at WOT. They give you actual a/f ratio and are not a guesstimate
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Re: apexi safc11
Originally posted by mario60185
does that all work with the apexi unit...any help at all is greatly appreciated , thanks guys...oh, and gals!
does that all work with the apexi unit...any help at all is greatly appreciated , thanks guys...oh, and gals!
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Joined: Jul 2003
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From: Denver, CO
Originally posted by Pure Tremble
Wideband02 sesnor allows you to tune your car at WOT with an a/f gauge ACCURATELY. If you were to connect an a/f gauge to your stock 02 sensor, it would really only serve 1 purpose: To let you know when you enter closed loop. In other words, a/f gauges with your stock 02 are worthless. (unless you like looking at crosscounts). Stock 02s are on your car to keep you at a 14:7 a/f ratio. It determines rich/lean by voltage
Widebands ARE accurate and can be used to adjust a/f ratio at WOT. They give you actual a/f ratio and are not a guesstimate
Wideband02 sesnor allows you to tune your car at WOT with an a/f gauge ACCURATELY. If you were to connect an a/f gauge to your stock 02 sensor, it would really only serve 1 purpose: To let you know when you enter closed loop. In other words, a/f gauges with your stock 02 are worthless. (unless you like looking at crosscounts). Stock 02s are on your car to keep you at a 14:7 a/f ratio. It determines rich/lean by voltage
Widebands ARE accurate and can be used to adjust a/f ratio at WOT. They give you actual a/f ratio and are not a guesstimate
Last edited by SlamMan; Oct 26, 2003 at 09:56 PM.
Re: apexi safc11
Originally posted by mario60185
i am thinking about getting the safc11 but i heard that if you want to tune it yourself you obviously need an air to fuel gage but i also hear that they are not accurate on our car because we need a wideband 02 sensor.
i am thinking about getting the safc11 but i heard that if you want to tune it yourself you obviously need an air to fuel gage but i also hear that they are not accurate on our car because we need a wideband 02 sensor.
A wideband 02 meter normally uses a five volt output (wide band) rather than the traditional one volt output (narrow band) 02 sensor most of us are used to (and comes factory in most vehicles).
When tuning a S-AFC II, its best to do so on a dyno equipped with a wideband 02, but if you want to tune yourself I would suggest a wideband meter from FJO or, my favorite wideband controller, the HKS Knock-Amp. Both use wide band sensors which are extremely accurate, and both will give you a reliable a/f reading. The n/a nissan likes to run close to 13:1 at WOT for best power. If you really want to tune your car to the "T", I would also suggest adding a good peak/hold EGT Gauge. The Exhaust Gas Temp. gauge measures the temperature of your exhaust gases, and this gauge can become particularly helpful down the road if you decided to go with a supercharger or turbocharger upgrade.
Hope this helps,
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