Permanent Wideband Install Write Up, Lots of Pictures
12-18-2013, 11:59 AM
#21
it would have been much simpler and cleaner to use the Fuse Panel in the car...you can get hot ignition key on power from the panel(use an inline fuse), and ground to any screw nearby that is connected to the chassis in some way...
just keep the excess wire under the dash and tidy up with zipties...
Way easier and cleaner than what you did with going to the battery and using that cube/relay thing you added in
just keep the excess wire under the dash and tidy up with zipties...
Way easier and cleaner than what you did with going to the battery and using that cube/relay thing you added in
12-18-2013, 02:13 PM
#22
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That's what I did; used the accessory port in the fuse panel and found a ground source under the steering wheel where one of the supports bolts are. It allowed me to keep all my wires in the same general area and was much easier to keep them hidden under the dash.
05-04-2014, 09:14 PM
#23
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you dont compensate because your sensor doesnt reach an exact 5 volts....
99% of all the cheap widebands cant do the extremes of 0 and 5 volts...
your equation should be
Volts/ 0.7143 +9 for AFR
or
Volts / 10.4167 + 0.62 for Lambda
the only time you have to do math to "Fix" the equation, is if yoru device doesnt have a 0v or a 5v value (example being some controllers do 0.5v-4.5v or 0v-4v)
there are times when you might see a voltage offset because of bad /incorrect grounds....but it still doesnt change your formula...you just need to fix your grounds in that case
99% of all the cheap widebands cant do the extremes of 0 and 5 volts...
your equation should be
Volts/ 0.7143 +9 for AFR
or
Volts / 10.4167 + 0.62 for Lambda
the only time you have to do math to "Fix" the equation, is if yoru device doesnt have a 0v or a 5v value (example being some controllers do 0.5v-4.5v or 0v-4v)
there are times when you might see a voltage offset because of bad /incorrect grounds....but it still doesnt change your formula...you just need to fix your grounds in that case
I would think I would want hptuners to read a 1.10 lambda when the sensor reads 16. I know the ngk afx reads 14.5 at a 14.7afr, maybe thats what was being corrected. When it gets nicer out and I get time I'm going to have to check some stuff and figure out exactly whats going on to make sure the calculations are correct.
