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SlowWhite · 06-08-2014

http://www.ecmtuning.com/wiki/linearitems

"The LinWideband item works exactly the same except, of course, units are displayed as A/F ratio instead of pressure. However, some wideband units don't faithfully follow the characteristics shown in their documentation. If this is the case, you'll probably need to empirically determine the settings necessary to obtain agreement between the values displayed directly by the wideband unit and those displayed by ECMLink. Probably the simplest way do this is to add RawLinWideband to your displayed values (click the Raw value button on the Display Values dialog). Then lock the ECU in open-loop mode and force a stoichiometric measured (displayed by the wideband unit) A/F ratio (Lambda = 1.0, gasoline A/F ratio = 14.7:1). Observe the logged RawLinWideband voltage. Set Max volts to the observed value and set Max lambda to 1.0. (If you are using ECMLink's narrowband simulation, this observed voltage will also be NBO2 sim's WB switch point.)

Next, determine a Min volts and min lambda point. Force a measured gasoline A/F ratio of 11.0:1 (lambda = 0.75). Observe the logged RawLinWideband voltage. Set Min volts to the observed value and set Min lambda to 0.75. Finish by restoring your normal closed-loop configuration and verify that the ECMLink displayed A/F ratio values match those displayed by the wideband unit."

How do you do this (see above), i've set it up in the laptop and have the raw data set to log. But what i dont understand is how do you force the a/f ratio's?

I've also emailed and texted the previous owner for his settings on the wideband. Since he was running it as Linear he must have had it set up already. However with the discussions about his injector globals and dead times being wrong. Will his setpoints for the wideband be incorrect?

06-08-2014	#153
SlowWhite Been there, done that. Join Date: Oct 2003 Location: Camden, S.C. Posts: 3,248	Re: Potential Buy 1997 GSX http://www.ecmtuning.com/wiki/linearitems "The LinWideband item works exactly the same except, of course, units are displayed as A/F ratio instead of pressure. However, some wideband units don't faithfully follow the characteristics shown in their documentation. If this is the case, you'll probably need to empirically determine the settings necessary to obtain agreement between the values displayed directly by the wideband unit and those displayed by ECMLink. Probably the simplest way do this is to add RawLinWideband to your displayed values (click the Raw value button on the Display Values dialog). Then lock the ECU in open-loop mode and force a stoichiometric measured (displayed by the wideband unit) A/F ratio (Lambda = 1.0, gasoline A/F ratio = 14.7:1). Observe the logged RawLinWideband voltage. Set Max volts to the observed value and set Max lambda to 1.0. (If you are using ECMLink's narrowband simulation, this observed voltage will also be NBO2 sim's WB switch point.) Next, determine a Min volts and min lambda point. Force a measured gasoline A/F ratio of 11.0:1 (lambda = 0.75). Observe the logged RawLinWideband voltage. Set Min volts to the observed value and set Min lambda to 0.75. Finish by restoring your normal closed-loop configuration and verify that the ECMLink displayed A/F ratio values match those displayed by the wideband unit." How do you do this (see above), i've set it up in the laptop and have the raw data set to log. But what i dont understand is how do you force the a/f ratio's? I've also emailed and texted the previous owner for his settings on the wideband. Since he was running it as Linear he must have had it set up already. However with the discussions about his injector globals and dead times being wrong. Will his setpoints for the wideband be incorrect? __________________ 1997 GSX - new ride 1997 GSX - dedicated track car 2004 R6 - sold 1992 GSX - sold 1996 GST - sold 1995 GSX - sold Best 1/4 - 11.7 on 93oct Best 1/4 MPH - 120mph Last edited by SlowWhite; 06-08-2014 at 11:30 AM..